FxSound - Clearer Sound for Your PC. The new FxSound boosts your sound quality, volume, clarity and bass.
Unity - The multiplatform game creation tools for everyone.
Equalizer APO - A system-wide equalizer for Windows 7 / 8 / 8.1 / 10 with channel remapping/copying capabilities
Godot Engine - Feature-packed 2D and 3D open source game engine.
Boom 3D - Audio enhancer with 3D surround sound
Blender - Blender is the open source, cross platform suite of tools for 3D creation.