Scripts/General

Input

 * KeyboardEventManager - An event-based keyboard input manager.
 * IPhoneToMouse - Replaces iPhoneInput commands with Input so you can use it in PC/Mac Version too.
 * FingerManager - Easily manage multi-touch phases for iPhone.

Data Structures

 * ArrayTools - Functions to use built-in arrays like an ArrayList.
 * DeepCopy - Creates a deep copy of an array or hashtable.
 * MultiKeyDictionary - Like a Dictionary, but you can have two keys for each elements.
 * ObjectCopier - An alternative to IClonable.
 * ParallelKeyDictionary - Like a Dictionary, but you can have identical keys.
 * ReflectedObject - Reflects a target object, providing quick access by name to reading/writing its fields/properties, and calling its methods.
 * Set - A set data structure.
 * JavascriptMultiDimArrays - Declare multi-dimensional arrays like int[,] or int[][] in JS (mostly obsolete in Unity 3.2, though still useful for jagged arrays)
 * SQLite - How to integrate SQLite into your project.

Strings

 * SimpleRegex - How one might use regular expressions in Unity.
 * LanguageFilter - Removes badwords from strings using regular expressions.
 * MD5 - Generate an MD5 hash for a string.
 * ExpressionParser - A simple extensible expression parser that can evaluate mathematical string-expressions.
 * StringFilter - A class to allow string filtering based on a list of exclude words / char.
 * StringToValue - Functions for finding data within a string.
 * StringUtil - Word wrap and line count functions.
 * IPhoneDeviceModel - Plugin that return the iPhone Device Model as a string.
 * TextScanner - A utility class for parsing strings using std C sscanf format strings.
 * SecondsToText - Convert seconds to a text time string using the highest set available.
 * TextManager - Uses gettext and PO Editor for translating text.

Texture/Color

 * HSBColor - This utility script provides a HSB color model in addition to Unity's built in RGB Color class.
 * LABColor - This utility script provides an LAB color model. Lab color is designed to approximate human vision and so it aspires to perceptual uniformity.
 * MaxRectsBinPack - A port of Jukka Jylänki's Max Rect algorithm, useful for generating sprite atlases
 * MiniEXR - A class that allows writing 16-bit EXR files directly from Unity.
 * TextureDrawCircle - A function that draws circles inside a texture.
 * TextureDrawLine - A function that draws lines inside a texture.
 * TextureFloodFill - A floodfill extension for Texture2D.
 * TextureScale - Resize textures, while scaling the contents using either bilinear or point filtering.
 * TextureUtils - Functions for colorizing, masking, and merging textures at runtime.
 * UnityPaint - A script to draw anti-aliased lines, brush strokes and vector lines on a texture.
 * XKCDColors - A collection of 948 color constants, from the xkcd color survey (C#).
 * XKCDColorsByIndex - A modified version of XKCDColors, accessible by index rather than name.

Meshes

 * FastObjImporter - Fast importer for Blender .obj files at runtime.
 * MeshCreationGrid - Shows how to procedurally generate a mesh with proper vertices and uvs to work as a tile-grid
 * MeshCreationHelper - Helper to create a new mesh from some mesh's submesh.
 * MeshHelper - Helper to subdivide into 2x2 or 3x3 and keep shared vertices / edges.
 * 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.
 * MeshSubdivision - Center and edge subdivision.
 * MetaMorph - MetaMorph is a Unity3d and Blender3d toolkit that allows mesh animation in Unity games using Blender shapekeys.
 * 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.
 * PolyOrderFixupOnImport - Replaces original polygon ordering in a mesh after possible unwanted optimizations by Unity.
 * PrintPolyCount - Prints total vertex and triangle count in the object hierarchy.
 * ProceduralPrimitives - Codes to procedurally create custom primitive meshes.
 * SkinnedMeshTools - Copy one skinnedmesh renderer onto another with same bones. Think swappable equipment pieces.
 * Triangulator - A utility class for splitting a 2D polygon into triangles.
 * UVTransfer - Editor script to transfer UVs between two models.
 * VertexInfo - Displays the vertex numbers of a mesh at the runtime.

Other

 * Accessing number of drawcalls from script - Retrieve the number of drawcalls for statistical purposes
 * Calculating Lead For Projectiles - These script fragments allow you to add some lead ahead of the target allowing
 * Low Pass Filter - These functions apply a low pass filter to a Vector3 and a Quaternion value. Useful to get rid of jitter.
 * Averaging Quaternions and Vectors - Simple method of averaging rotational values (quaternion) and positions (vector).
 * 3d Math functions - This is a collection of generic 3d math functions such as line - plane intersection, closest points on two lines, etc.
 * ScaleTransform - A method allows you to scale a GameObject transform to a specific size along the x & z axis by taking into account the GameObjects renderer bounds if a renderer component is attached. Also takes into account any children of the transform.
 * Windows Saved Game Directory - Query the path of the Saved Games directory (Vista and up) with fallback to My Documents\My Games on Windows systems.
 * Bresenham3D - An enumerator that allows you to loop through all integer Vector3's along a line.
 * ComponentInstantiationUtility - Static C# class that allows you to instantiate pre-parented components as game objects with one easy line of code.
 * deepSearch - Searches recursively from the parent down.
 * DrawGizmoGrid - Draws a grid centered on your gameobject using the Gizmos api.
 * ExpandoObject - Create ECMAScript-style expando objects in Unity Javascript.
 * Google Analytics - A script component that allows for event logging to Google Analytics.
 * Interface Finder - A script that will allow you to find classes that implement a certain interface in a scene.
 * IsVisibleFrom - An extension method for checking if an Renderer is rendered by a specific Camera.
 * IPhone Build Utility Script - This script copies the icon and splash screen every time the project is built.
 * JobQueue - A threaded job queue with an internal thread pool.
 * LayerMaskExtensions - Extension class to add usability and easier debugging to LayerMasks.
 * Layers - A utility script for holding easily-accessible layers and easily creating masks.
 * MixupGO - Flatten GameObjects and all attached components into a single object using duck typing in Unity Javascript.
 * PrintExtended - Additional print methods.
 * RayCastWithoutPhysics - Raycast without pixel color, takes 1/4 of a second to Raycast using Zbuffer.
 * ScrollingBG - A simple scrolling class useful for easy 2d paralaxed backgrounds.
 * 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
 * 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.
 * TitleSafeAreaDisplay - Helper that renders guides for visualizing title safe area.
 * WeightedRandomizer - Selects a random element from a collection where each item has a different weight (% chance of being selected). (C#)
 * ToggleCapsLock - Checks and sets the state of the caps lock key's toggle.
 * MazeGenerator - Randomly generates a maze.
 * 3DMenu - A simple main menu for 3d text in your scene
 * CameraFog - Modifies a camera to allows you to control the fog settings for that camera separately from the global scene fog or other cameras.
 * ConstantVelocity - Set a local velocity to an object (useful for missiles perhaps?)
 * Cubescape - Simple perlin cube landscape, can be made voxel.
 * Flag - Simple bitwise logical operations.
 * Flashlight - Allows the switching on and off of a light in script.
 * GameObjectLock - A simple script written in C# that can lock a game objects position, rotation or scale independently or set a global lock to prevent those values from changing.
 * LevelUp - Provides the basic formula for leveling up characters based on experience points.
 * ModularConstruction - Basic general purpose modular building system for Rust-like buildings, or anything else made from modules.
 * OldSchoolSteering - Rotate a transform towards 8 axes by assigning a new forward-direction from the horizontal and vertical inputs.
 * OnCollideExplode - Spawn a prefab (explosion) on collision, and remove the GameObject from the game.
 * OnExplosionEffect - Give an explosive effect over an area.
 * OnMouseDown - Sends OnMouseDown messages on an iPhone.
 * PointerManager - Hides the mouse pointer when it is not in use.
 * SwitchCamera - Switches between cameras in your scene.
 * Teleporter - Teleport all objects from one place to another.
 * TransformRotation2D - Represent Transform rotations with just a float (useful for 2D games).
 * AStarHelper - Textbook implementation of the A* pathing routine.
 * ClassTypeReference - Serializable reference to  for class types with custom property drawer and attributes to filter selection for editor interfaces.
 * EnumeratedDelegate - A method to setup a quick and dirty Finite State Machine of sorts by means of generics, delegates and an enum.
 * Executors Framework - A framework for multi-threading without getting a headache. (Warning: The Unity API is not thread-safe)
 * FakeGizmoDemo - Simple example of creating a fake Gizmo that can be applied to an object at runtime, not just in the editor.
 * FindingClosestObject - How to find the closest object to the player, defined by layer. Using Physics.OverlapSphere, an IComparer and InvokeRepeating. Script in JS.
 * 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.
 * Lock Free Queue - Queue that can be simultaneously enqueued to and dequeued from, even from multiple threads.
 * ToggleGravity - How to toggle a property, in this case the global gravity setting, by the left mouse button.