Unity Node Editor: Lets you view and edit node graphs inside Unity
A non-intrusive bulk/unity C++ build tool for Visual Studio
UIWidget is a Unity Package which helps developers to create apps
OpenFlight (.flt) importer for the Unity game engine.
GitHub for Unity
Dependency Injection Framework for Unity3D
An example of how to use the Tilia packages to create great content
A project and package manager for Unity
Create beautiful user interfaces for immersive VR/AR experiences
Physics-based grabbing for SteamVR development in Unity
A powerful HTML, C#, PHP editor for windows
A generic framework for the generation of game levels.
A simple lightweight framework to build API's