Unity - The multiplatform game creation tools for everyone.
RNI Films - Real film filters for iPhone photographers
Godot Engine - Feature-packed 2D and 3D open source game engine.
Carbon - Create and share beautiful images of your source code.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Huji Cam - Huji Cam is one of best app that makes your moments as precious as the feelings of the analog film with old memories.