Scripts

General

General Concepts

• AManagerClass - How to add easy access to a singleton class in a scene.
• BasicDataStructures - Discussion of the use of the data-structures available in Unity.
• BooMessenger - An efficient and simple to use messaging platform. Allows hierarchial grouping of message types.
• CoroutineScheduler - A coroutine scheduler implementation. Gain a better understanding of coroutines.
• Executors Framework - A framework for multi-threading without getting a headache. (Warning: The Unity API is not thread-safe)
• CSharpEventManager - C# implementation of a messaging/notification system. Allows subscription to events without referencing their definitions.
• CSharpMessenger - Another C# messaging/notification system implemented using delegates and generics.
• CSharpMessenger Extended - C# messaging system using delegates and generics. Based on CSharpMessenger but has more error detection.
• FakeGizmoDemo - simple example of creating a fake Gizmo - a three-arrow axis, mouse-moveable, that can be applied to an object at Runtime, not just during editing. Also contains an example of Procedural Mesh Creation - using only code to create an in-game mesh object from vertices and triangles.
• JavascriptMultiDimArrays - Declare multi-dimensional arrays like int[,] or int[][] in JS (mostly obsolete in Unity 3.2, though still useful for jagged arrays)
• MessageRouter - subscription based messaging with delayed notification, delivery stages, message filtering, tagging, and receiver assertions
• NotificationCenter - Register scripts to receive and post notifications. Handles messaging across scripts without references to each other.
• SimpleRegex - How one might use regular expressions in Unity.
• ToggleGravity - How to toggle a property, in this case the global gravity setting, by the left mouse button.
• Lipis Runtime Gizmo - Update on Lipis Runtime Gizmo (works with Translation, Rotation, and Scale). Included C# code and corrected javascript code removing unity 3D reserved words in code.

Utility Scripts

• Angle - Helper class to work with angles.
• ArrayPrefs - Functions for saving and loading arrays of ints, floats, and strings using PlayerPrefs.
• BoolPrefs - Adds GetBool and SetBool, which are missing from PlayerPrefs.
• Unity_Custom_Input_Manager - Allows you to change input configuration on the fly. Default inputmanager only allows you to change on start.
• CustomRandom - C# Random number generator, when you must have a random number generator that works the same way on all platforms!
• ComponentInstantiationUtility - Static C# class that allows you to instantiate pre-parented components as game objects with one easy line of code.
• DeepCopy - Creates a deep copy of an array or hashtable.
• deepSearch - Searches recursively from the parent down.
• SimpleDictionary - Implements a simple dictionary-like object AND lets you save/load the dictionaries to text files.
• ExpandoObject - Create ECMAScript-style expando objects in Unity Javascript.
• FingerManager - Easily manage multi-touch phases for iPhone.
• HexConverter - Functions for converting decimal colors to hexadecimal... and back.
• HSBColor - This utility script provides a HSB color model in addition to Unity's built in RGB Color class.
• Interpolate - Interpolation utility functions for easing, Bezier splines, and Catmull-Rom splines.
• IsVisibleFrom - An extension method for checking if an Renderer is rendered by a specific Camera.
• IPhoneToMouse - Replaces iPhoneInput commands with Input so you can use it in PC/Mac Version too.
• Json - The JSONObject class will encode/parse JSON formatted data for server communication (i.e. PHP's json_encode()).
• LABColor - This utility script provides an LAB color model. Lab color is designed to approximate human vision and so it aspires to perceptual uniformity.
• LanguageFilter - Removes badwords from strings using regular expressions.
• Layers - A utility script for holding easily-accessible layers and easily creating masks.
• Mathfx - This script contains a growing number of small and useful math functions (short for Mathf eXtended).
• Matrix - A class for doing 3D matrix math against Vector3 objects.
• MazeGenerator - Randomly generates a maze.
• MD5 - Generate an MD5 hash for a string.
• MeshCreationHelper - Helper to create a new mesh from some mesh's submesh.
• MeshMerger - Draw a large number of meshes with a single draw call.
• MeshSmoother - Deformation of a mesh by applying Laplacian/HC-Algorithm Smoother, also script for finding adjacent vertices in a mesh.
• MetadataSystem - Mechanism for ciphered, compressed preferences and declarative metadata system with runtime overrides.
• MetaMorph - MetaMorph is a Unity3d and Blender3d toolkit that allows mesh animation in Unity games using Blender shapekeys.
• MixupGO - Flatten GameObjects and all attached components into a single object using duck typing in Unity Javascript.
• ObjExporter - A simple utility class for exporting a mesh to an obj file.
• ObjExporterColorUvs - Enhanced version of ObjExporter that also exports vertex color and multiple uvsets to an obj file.
• ObjImporter - Import .obj files at runtime.
• PlaySoundAtInterval - Plays a sound file at the specified intervals of time.
• PolyContainsPoint - Like Rect.Contains, except instead of a rect, you can define any arbitrary polygon.
• PrintPolyCount - Prints total vertex and triangle count in the object hierarchy.
• PropertyListSerializer - Loads and saves a .plist XML file to and from a hierarchical hashtable.
• Set - A set data structure.
• Shell - A replacement for the built-in shell function removed from Unity 1.6.1.
• Simple LOD Manager - Script to handle arbitrary number and distances for Level-Of-Detail in models
• SpeedLerp - Replacements for Mathf.Lerp, InverseLerp, SmoothStep, etc. that are typically 1.5X faster or more. Also adds Vector2Lerp and SuperLerp.
• Startup Manager - A singleton class that handles starting up scripts in a sorted order based on a priority variable
• StringToValue - Functions for finding data within a string.
• StringUtil - Word wrap and line count functions.
• TextScanner - A utility class for parsing strings using std C sscanf format strings.
• TextureDrawCircle - A function that draws circles inside a texture.
• TextureDrawLine - A function that draws lines inside a texture.
• TextureScale - Resize textures, while scaling the contents using either bilinear or point filtering.
• TextureUtils - Functions for colorizing, masking, and merging textures at runtime.
• TileSelector - An Inspector extension that creates a pop-up window to select a tile or a NxM group of tiles from a main tileset, for use in a sprite object.
• TinyXmlReader - A class that reads XML text and parses it for use.
• Triangulator - A utility class for splitting a 2D polygon into triangles.
• UnityPaint - A script to draw anti-aliased lines, brush strokes and vector lines on a texture.
• UVTransfer - Editor script to transfer UVs between two models.
• VertexInfo - Displays the vertex numbers of a mesh at the runtime.

Really Simple Scripts

• ConstantVelocity - Set a local velocity to an object (useful for missiles perhaps?)
• OnCollideExplode - Spawn a prefab (explosion) on collision, and remove the GameObject from the game.
• OnCollideSound - Spawn a prefab (preferably a sound) if a collision is over a certain magnitude.
• OnExplosionEffect - Give an explosive effect over an area.
• OnMouseDown - Sends OnMouseDown messages on an iPhone.
• SwitchCamera - Switches between cameras in your scene.
• PointerManager - Hides the mouse pointer when it is not in use.
• Flashlight - Allows the switching on and off of a light in script.
• 3DMenu - A simple main menu for 3d text in your scene

Code Snippets

• Calculating Lead For Projectiles - These script fragments allow you to add some lead ahead of the target allowing projectiles/missiles to collide with the target. Uses a quadratic rather than an iterative solution.

• Save and Load from XML - This script allows you to save and load data from an XML file, written in C# (JS version included).

• Save and Load from XML U3 Collections - Save and load all game objects in a scene, modify the code to add in what you want saved about the game object, written in C#.

• Accessing number of drawcalls from script - Retrieve the number of drawcalls for statistical purposes

• Load Data from Excel 2003 - This script allows you to load information from excel spreadsheets into Unity, written in C#.

Controllers

Camera Controls

• AspectRatioEnforcer - Force the screen to a desired aspect ratio, using letterboxing/pillarboxing as necessary.
• CameraGradientBackground - A simple two-color gradient background for your camera.
• CrossFade - Smoothly fade the view from one camera to another.
• CrossFadePro - Smoothly fade the view from one camera to another, with motion in both cameras.
• DreamWipe - Fade the view from one camera to another, with the wavy distortion seen with dream sequences or flashbacks
• FadeInOut - Fade a full-screen image in or out, good for fade in outs.
• Floating Origin - Translates everything so that the camera stays at the origin to resolve spatial jittering in large scale games.
• Headbobber - Make an object bob up and down smoothly when you're pressing one or both of the horizontal/vertical axes.
• KeyboardOrbit - Tweaked version of the MouseOrbit script that allows keyboard control (or whatever is bound to the "Horizontal" and "Vertical" axes)
• MinimapCamera - This script can be attached to a camera to provide some basic minimap functionality such as zooming and a full-screen toggle.
• MouseLookPlus - A javascript mouselook with key control. based on the standard assets C# mouselook.
• MouseLookPlus2 - A modification of MouseLookPlus to allow for moving and strafing the camera.
• MouseOrbitImproved - Improved version of the original MouseOrbit script. Zooms with the mousewheel and uses linecast to make sure that object isn't behind anything.
• MouseOrbitZoom - A camera that combines orbiting zooming and panning, initially set up to mimic the 3dsMax camera controls.
• MultipleCameraSwitcher - A script that allows you to switch between different cameras in your scene. Supports four camera views that can be toggled with a button.
• OffsetVanishingPoint - Sets the vanishing point of a camera to an arbitrary position.
• RectangleWipe - Make an animated rectangular zooming screen wipe from one camera to another.
• ScreenWipes - Base script used by CrossFade, CrossFadePro, DreamWipe, RectangleWipe, ShapeWipe, and SquishWipe.
• ShapeWipe - Make an animated screen wipe, where an arbitrary shape containing the second view zooms in or out, and rotates.
• SmoothFollow2 - This is designed to make a camera smoothly follow a ship in space.
• SmoothFollowWithCameraBumper - Based on SmoothFollow2, this features a bumper mechanism to prevent the camera from going through
• SmoothFollowAdvanced - Based on SmoothFollow2 & SmoothFollowWithCameraBumper, this features a design capability and controller input.
• SquishWipe - Make an animated screen wipe from one camera to another, where the first image is squished out of view.
• SmoothLookFrame - Looks at a target but tries to keep another target within the camera's view.
• SmoothMouseLook - Modified version of MouseLook.cs script included in Unity's Standard Assets. It moves the camera with an easing effect.
• StaticBackground - Use a static image as the background to your 3d scene.
• TouchLook - Use the iOS touches to rotate the camera

Character Controller Scripts

• A* Pathfinding - An A* pathfinding-system for out-of-the-box pathfinding in Unity.
• AimDownSights - An expansion script for the FPSWalker that smoothly animates aiming down the sights of an attached gun model.
• Biped Parts Finder - Editor script for search simplification of parts of a biped body.
• Click To Move - Moves an object towards the mouse position when the Left Mouse Button is clicked
• ClickCharacterController - Uses Locomotion to move a character to the point the Left Mouse button is clicked
• DoubleJumpController - A hack for the 2d gameplay tutorial character controller script, it allows the character to make a second jump when jumping, or make a little jump when falling.
• Finite State Machine - A simple Finite State Machine framework to control NPCs.
• Force2D - Constrain a GameObject to move in two dimensions.
• FPSWalkerEnhanced - Adds features to standard FPSWalker, such as sliding down slopes, falling damage, and walk/run modes
• Gesture_Recognizer - A math based gesture recognition script.
• GridMove - A controller for character movement typically seen in old-school 2D RPGs and strategy games.
• HeadLookController - A component that can be used to make a character look towards a specified point in space, smoothly turning towards it with for example the eyes, head, upper body, or whatever is specified.
• JCar - A car using wheel colliders.
• KeyCombo - A class that can be used to detect fighting-game style combos.
• LookAtMouse - Cause an object to rotate toward the cursor, along the y axis.
• Pathfinding - [Old] A pathfinding-system using raycasting to avoid obstacles
• PhysicsFPSWalker - Another physics based fps walker script.
• RigidbodyFPSWalker - An physics based FPS walker that works with rigidbodies and thus is affected by forces, joints or other rigidbodies
• SeekSteer - A class that can be used to move an object to follow a loose path of waypoints
• ShipControls - Place this script on a RigidBody for 2D spaceship controls like OverWhelmed Arena.
• SimpleTankController - A script that emulates simple tank movement.
• VariableSpeedFPSwalker - An FPS walker script having different speeds for walking forward, strafing, and back-pedalling.
• WaypointMaster - Implementation of A* algorithm, based on waypoints.

Animation Controllers

• AniMate - Script to quickly and easily create animations/tweens of almost any value and including eased, rigidbody and rotation animation.
• iTween - Focusing on the established solutions and frameworks of projects such as TweenLite, Tweener, and other tweening systems, iTween is a battle-tested solution for streamlining production in the Unity3D environment.
• MoveObject - Basic functions for when you just need to move something from point A to point B, or rotate by a given number of degrees, without anything fancy.
• Tween - An adaptation of the Tweener class of FLASH for unity.
• AnimationStepSync - Repositions object after animation ends - useful for positioning via animations.

GUI

Graphical User Interface Scripts

• AutoType - Automaticly types a string of text typewriter style.
• Box_Script - Use this system to easily make simple GUI elements in nice looking boxes with buttons that actually do something useful. All generated at runtime from a MenuStyle.
• Button - Use this script on a guiTexture object for regular push buttons that send a message when clicked.
• Custom_2D_Pointer - Make a custom pointer that changes shape at the edges of the screen.
• Custom Mouse Pointer - Make a custom pointer that and draw it over OnGUI Elements.
• DraggableGUIElement - Click and drag on GUITexture or GUIText to move it around the screen.
• DragSlider - Use this script with a pair of GUITextures to make a functioning slider.
• Fade - General routines that allow fading of GUITextures or materials (including GUITexts) from anywhere, both in and out and using either alpha or colors, with optional easing.
• FadeIn - Allows you to show/hide a GUIText or GUITexture when pressing a key/button.
• ForwardAllMouseEvents - Send mouse events to some sort of controller type GameObject.
• GetTimeString - A simple function that can be placed anywhere and used to display times. Useful for racing games.
• GUIBuilder - Generic classes for easing the pain of GUI creation. (BETA)
• GUIFly - Use this script on an object to make it respond to a "Fly" message so that it may move on and off the screen in a pleasing manner.
• GuiRatioFixer - Use on a GUIText / GUITexture object to automatically adjust aspect ratio
• GuiRatioFixer2 - Alternate script based on screen's aspect to use on a GUIText / GUITexture object to automatically adjust aspect ratio
• GUIScaler - Automatically scale a GUITexture with the screen size / resolution
• GUITextField - A wrapper for GUI.TextField / GUILayout.TextField that implements focussing, allowing text to be "committed" only when the field is unfocussed (very useful for networking code).
• ObjectLabel - Makes a GUIText label follow an object in 3D space. Useful for things like having name tags over players' heads.
• ScreenShotMovie - Captures a screenshot sequence for use when making a movie
• SplashScreen - Fade a splash logo in, wait for a certain interval, then fade out, while the next level is loaded.
• TakeScreenshot - Captures sequentially numbered screenshots when a function key is pressed.
• Timer - Attach to a GUIText object to create a fade-able timer.
• ToggleButton - Extends the Button class to create a toggle button.
• MainMenu - Shows how delegation works in C# in order to switch between different menus on the fly easily

Unity 2.0 GUI Scripts

• Blinking Text Entry Cursor - Make your cursor blink on input fields
• CustomGetMouseButtonDown - custom wrapper functions for Input.GetMouseButton(Down) which can be modified to block clicks when over a window
• DrawLine - Draws a line in the GUI (makes up for the severe lack of an equivalent function in the GUI class).
• DropDownList - A hierarchy based drop down list that works like the Hierarchy window in Unity.
• FileBrowser - Implement a crude file browser.
• GUICam - Holds GUIRect a rectanle of camera pixelRect in GUI oriented co-oridinates (0,0) is top left
• GUIExtensions - A library of GUI extensions to fill in some missing gaps. Notably: TextArea that auto-selects on focus.
• GUIx - extended GUI functions
• Marquee - Creates a scrolling label that moves from left to right across the screen.
• PauseMenu - Standard pause menu used by Fugu Games for web players and widgets
• PopupList - A button that pops up a selectable list when clicked
• Position To Rect - Convert a GUITexture position to Rect (GUI coordinates)
• SelectList - A list of elements of which one can be selected.
• WithPrefs - Functions that change values and modifies preferences in one simple step

• PasswordField - Allows the user to type in a field masked by *'s (or any other character) [Unity has this built-in now. Leaving it as an example of more complex widget construction, but shouldn't be preferred for actual usage.]

Heads Up Display Scripts

• FramesPerSecond - Use this script on a GUIText object to display FPS counter.
• MessageDisplayer - Use this script on a GUIText object to have a self-disappearing list of status messages.
• MessageList - Create a list of timed self-fading messages.
• Radar - Use this script on a GameObject to display a radar.

Editor GUI Scripts

• EditorGUIExtension - Some extensions to make coding the GUI for utilities/custom inspectors easier.
• TransformInspector - Reverse engineered version of the Unity 3 Transform component inspector. Makes extending the default inspector much easier.

Effects

General Purpose Effect Scripts

• Animating Tiled texture - A texture made of many tiles animated through setting the uv offsets
• Animating Tiled texture - Extended - Use one animation cell-sheet texture for many animations and skins.
• CameraFacingBillboard - Use this script on a billboard or similar object to make it align itself with the camera.
• CameraRenderSettings - Allows storing seperate render settings per camera - an extended version of the Fog Layer script above.
• Character Shadow - Cast shadows from an object! (requires Unity Pro)
• Flocking - A flocking script with randomness and target following.
• Fog Layer - Lets you determine per camera if fog should be enabled or disabled
• LookAtCameraYonly - Use this script on a billboard or other object to have it face the camera but only rotate on the Y axis.
• MeshMorpher - A Mesh Morpher script with scripting API
• MetaBalls - 3D Metaballs
• MarchingSquares - MarchingSquares (2D Surface Reconstruction)
• MorphTargets - Improved MeshMorpher script with multiple blendable targets
• Noise Library - LibNoise ported to Unity. Perlin, Multirigged Fractal, Voronoi, Billow
• OptimizedTrailRenderer - Started from Yoggy's trail renderer above, this one updates every frame and is built for one-time use.
• Particle Spiral Effect - Particle effect script for creating spirals, whirlpools, galaxies, etc.
• Perlin Noise - Noise functions for smoothly moving objects around or anything else
• ReverseNormals - Reverses normals & back face culling of a mesh
• Scrolling UVs - C# script that smoothly scrolls a material's UVs in an arbitrary direction. Supports arbitrary material names and material indices.
• SetRenderQueue - Sets the render queue for transparency sorting on an object or all of its children.
• Shadow Volumes in Alpha - Shadow volume based shadows (requires Unity Pro)
• Skinned Morph Targets - A set of scripts for morphing skinned meshes, including support for animating blend shapes together with skeletal animation.
• SoftBodies - Cloth, Springy Noodles, Jello Blocks, etc..
• StopEmittingAfterDelay - After a configurable delay, particles will fade naturally, then finally the object will get destroyed with autodestruct.
• Spline Controller - Interpolates any GameObject along a user-defined spline
• SVG - Render SVG Files.
• TextureMask - A simple shader for masking off areas of a texture.
• Texture swap animator - Feed it a bunch of textures and it will cycle through them. Useful for simple animations not on a texture atlas.
• TubeRenderer - LineRenderer too flat? Make it a tube instead.
• TimeBasedTrailRenderer - The Built in trail renderer does not fade its segments based on the time they have been alive. This one does.
• Trail Arc Renderer - Designed for melee trail swings, this creates a trail using Catmull-Rom spline interpolation
• Underwater Script - Simple underwater effects script. Works with indie!
• VectorLine - Renders a 2D vector line with an arbitrary width, color, and number of segments (requires Unity Pro)
• LineRenderer Rope - Creates a rope using physics and the LineRenderer component.
• 3D Physics Based Rope - Creates a rope using physics and the TubeRenderer (Use included modified code).
• Flickering Light - Adds flickering effect to Light object. Flicker styles are Campfire and Fluorescent.

Image Postprocessing Effects

These scripts require Unity Pro.

• BloomEffect (OBSOLETE) - Sometimes referred to as "glow", use this effect to make bright parts in your scene bleed. This script is made obsolete by the GlowEffect shipped with Unity 1.5.
• BoostColors - A very simple and fast way to boost the contrast of saturation of the graphics in your game.
• InvertCamera - A simple script that will invert everything rendered by a camera.

Physics / Simulation

Physics Scripts

• CollisionIgnoreManager - Script to manage ignoring collisions between groups of colliders.
• ComplicatedRigidbodyControl - Attach a rigidbody to an arbitrary transform, or a method to make rigidbodies never overshoot.
• DontGoThroughThings - Script that uses raycasting to avoid fast-moving objects going through obstructions.
• DragObject - Similar to DragRigidbody (drag rigidbodies around with the mouse), but much more stable and with more direct control.

Simulation Scripts

• Compass - This script simulates a compass with North relative to the Z axis of a reference object
• GameTime - This script rotates a directional light to match the rotation of the sun based on the system time.
• GPS Global Positioning System - This script simulates a GPS device providing real world GPS locations based on a reference point
• Gravity - Simulates body-to-body gravity (i.e. planetary gravity)
• IMU Inertial Measurement Unit - This script simulates an IMU providing velocities and accelerations of the object it is attached to in the objects local frame.
• OpenStreetMap for unity iPhone - A simple OpenStreetMap script for unity iPhone
• SICK Laser Scanner - This script simulates the SICK LMS type planar laser scanner
• Simple planetary orbits - Visually define the orbital path of one object around another fixed object, like a planet around the sun
• sunLight - A script that rotates a directional light based on longitude/latitude.
• Trajectory Simulation - Demonstrates simulating the trajectory of a launched object
• WheelColliderSource - Source code based off the Unity3D WheelCollider and associated classes.

Networking

• NetworkView_Position_Sync - Network position interpolation, extrapolation, packet timestamp preservation and more in non-authoritative applications

WWW Scripts

• CookieCutter - Access browser cookies from Unity web players.
• FeedMe - A simple XML "feed" displayer which uses TinyXmlReader
• GetXMLHack - Get XML data into the web player using browser script instead of WWW() (which has been buggy for me!)
• MeshSerializer2 - Save Unity meshes to files for the Web, load them with WWW interface.
  • MeshSerializer - an old version of the same (simpler format, but larger file sizes)
• PlayerPrefsx - ( Now obsolete in Unity 2.1) An extension to CookieCutter which allows you to save data in both standalones and cookies for the web without having to think about it.
• Server Side Highscores - A complete tutorial for implementing a server side php script for storing high scores and how to post the scores to the server.
• UnityObject - A nice & clean way to embed .unityweb in your web browser. Plugin Detection, Communication, Clean HTML
• VersionCheck - A very basic version checker. This can be used to check if the version of the game the user is running is the latest, and if not, send them to a URL to download the latest.
• UnityLitJSON - A fork of LitJSON that's been edited to work with Unity.
• Json - Another JSON script
• MoreJSONScripts - Yet another JSON Script
• JSONParse - A robust, simple JSON Parser written in UnityJS.

Unity 1.x Networking Scripts

• NetworkCursor - Serverless realtime networking. An example where one Unity instance controls another via a TCP/IP socket. Could be expanded to do many types of realtime networking.
• Sender - Uses a Server to send data from the parent object to whatever is on the other end of the connection.
• Server - TCP network host, based on NetworkCursor, but expanded to do more.
• Simple TCP/IP Client - Server - This contains source code for C# that you can use to create a server for Windows and a DLL in C# that you can use with Unity

Sound

• JukeboxController - A very basic jukebox class. This can be used to manage multiple audio clips across different levels.
• Listener - Better control of Audio Listener volume
• Sound Manager - a simple jukebox script with crossfading and event-driven music "interrupts".
• Volume Slider - fade or increase a sounds volume smoothly over time

Development

Debugging Scripts

• DetectLeaks - a simple GUI script for displaying the amount of objects currently loaded by type
• DebugConsole - A script to allow scrolling feedback from your scripts.
• DebuggerX - A simple javascript singleton that allows you to send debug to the console or the GUI
• Profiler - a simple c# script for profiling the performance of scripts, based on tags
• Reporter - a simple delayed action system info script that could be used for support purposes
• UUnit - a Simple xUnit framework that can be run inside Unity.
• SharpUnit - a unit testing framework adapted from UUnit but written in C#. Can also be run inside Unity3D.
• NUnit - de-facto standard for unit testing in .NET

Performance Scripts

• StaticPerformanceOptimization - A script that optimizes performance statically based on the users graphics card by dropping terrain resolution and quality settings
• SpriteManager - A script that allows many independently-moving 2D sprites to be drawn using a single draw call. This is particularly useful to increase iPhone performance.
• CombineSkinnedMeshes - A Script that allows to combine multiple skinned meshes to just one SkinnedMeshRenderer. Useful for Avatar System!
• SkinMeshCombineUtility - Script to work with CombineSkinnedMeshes.
• CombineChildrenBones - Similar to MeshMerger, this script combines MeshFilter meshes into a single skinned mesh and then tracks transform changes

Editor Scripts

• AddChild - Adds an empty GameObject as a child of each selected object.
• AddComponentRecursively - Adds a component to an object, and all the children of that object.
• AssetPathPrinter - Prints to console and copys to clipboard asset paths for all selected project window items
• AutoMeshCollisionCreator - Automatically convert mesh from 3D Package into Mesh Collider on Import.
• AutoSave - Editor script for automatic saving the scene and assets with an interval.
• Bake Material to Texture - Allows to bake complex materials into a single texture. Can be useful for converting assets from Desktop to Mobile (Pro Only)
• BoxColliderUtilities - Allows to scale or rotate BoxColliders side-aligned
• BuildAssetBundlesFromDirectory - Creates Asset Bundles from all files in a Directory (Pro Only)
• Camera view window - Shows the rendered image of any camera that has this script on, the window is displayed inside the scene view.
• CopyTransform - Copies the local transform of the selected game instance in the scene and then pastes it into another one you select.
• CountLines - Count all the files and lines in your project
• CreatePrefabFromSelected - Creates a prefab containing the contents of the currently selected game object.
• Create project directories - Simple script which creates various directories under your Assets folder, best used when creating a new project.
• DeleteComponentsInChildren - Helps to delete a special type of components which are attached to the children of the selected Gameobject.
• EncloseTerrain - A simple script to enclose your terrain in a wall.
• ExportNormalmap - Exports the normalmap generated from a grayscale texture.
• ExportOBJ - Wraps the Utility script ObjExporter.cs (above), adding File/Export/Wavefront OBJ menu item.
• ExportVisualStudio - Creates Visual Studio 2005, 2008 and 2010 projects. Designed for minimal friction for non-techy people.
• Expose_properties_in_inspector - Small script collection which exposes properties ( get/set accessors ) in the inspector.
• FbxAnimListPostprocessor - Import a list of splitted animations for FBX 3D models.
• FindObjects - Find objects by name or attached component type.
• TerrainPerlinNoise - Generates the terrain heights from a perlin noise function. **Warning: Uses Unity's undocumented Mathf.PerlinNoise() function. This may not work past Unity version 2.6.1**
• GetBBox - Find the bounding box of the selected game object (including any children)
• GetSize - Get the size in game units of a selection.
• HeightmapFromGridFloat - Applies the selected GridFloat file (topo data from USGS seamless server) as a heightmap to the active terrain.
• HeightmapFromTexture - Applies a selected texture as a heightmap to the active terrain.
• HierarchyFastHide - Makes list in window of game objects that have Mesh Renderer and adds toggle for user to turn it on and off. In Alpha State, but working with some limitations.
• HierarchySelectObject - Editor script that automatically selects and scrolls to the desired gameObject in the hierarchy window.
• InsertParent - An alternative to the built-in Make Parent command, this script inserts a new GameObject which becomes the parent of all selected objects.
• InvertSelection - Inverts the editors hierarchy selection
• iPhoneTextureImportSettings - iPhone specific script to change texture import settings for multiple textures at once.
• LoadSceneAdditive - Loads a selected scene into the current scene. Good for copying scenes.
• Macros - Execute arbitrary code snippets.
• MassMaterialEditor - Affect the some settings of the RenderSettings and Materials of selected objects simultaneously.
• MassSetMaterials - Sets the materials of all selected objects simultaneously.
• Mesh2Collider - Use an external 3D app to model and place primitive colliders.
• MoveToOrigin - Moves the selected GameObject(s) to (0, 0, 0).
• MultipleObjectsToLayer - an editor utility that lets you move multiple selected objects into a layer at the same time.
• Normalize - Normalize terrain
• Notes - Allows you to add notes to any GameObject.
• Object2Terrain - Convert a standard mesh object to a Unity terrain.
• OpenVisualStudioProject - Open the current visual studio project (To launch Express).
• PixelLightMapper - A pixel based light mapper for Unity.
• RaiseHeightmap - Raises or lowers the entire terrain by a specified amount.
• REPL - Editor panel that lets you interactively edit and run C# code.
• SaveFontTexture - Saves auto-generated bitmaps that Unity makes from vector fonts as .png files so they can be edited externally
• SceneDumper - Dump information about the scene to a text file.
• SelectByComponent - Selects all gameobjects in the scene which have the declared component type attached.
• SetGOFlags - Set or Clear 'Static', 'Active', 'Cast Shadow', 'Receive Shadow' on selected objects (and their children)
• New Skybox Generator - Generates Skybox by rendering 6 images and combining them with skybox material. Select multiple scene objects to render Skyboxes from multiple locations. (Pro Only)
• Skybox Generator - Generates the 6 images necessary to create a Skybox in Unity. (Pro Only)
• SnapToGrid - Snaps objects to a grid in 3 dimensions.
• Take3DScreenshot - Take a "3d screenshot"; a series of screenshots captured while rotating around a given object. Useful for QTVR creation.
• TerrainImporter - Imports heightmaps and splatmaps from terrain applications.
• TerrainObjExporter - Exports Unity terrain objects as .obj files.
• TextureImportSettings - Editor script to change texture import settings for multiple textures at once.
• ToggleActiveRecursively - Activates/deactivates entire hierarchies at once.
• ToggleActiveRecursivelyAllGameObjects - Activates/deactivates entire hierarchies at once and for all selected game objects.
• TransformUtilities - Includes tools to Align objects, copy, randomize and add noise to their transforms.
• WorldUVs - UV maps meshes in world space, allowing textures in separate meshes to seamlessly line up with each other.

External Links

• opensteer .NET
• Ctrl-J Sample Projects (wheel collider car and other stuff)
• Mars Explorer Sample Project (offroad raycast car with buoyancy, flight, minimap, etc)
• Unity Custom Inputmanager: Customize inputs from keyboard,mouse & joystick (xbox controller supported) on the fly - also for webgames.