GMXR2 is an audio generation tool you can use to create audio for your projects.

GMXR2 has a waveform generator with several wave shapes, pitch and envelope control and a modulator to generate all sorts of sounds! There are also handy buttons to generate pre-defined sound types, such as jump or shoot sounds.

Sounds can be saved in .wav format and imported into other programs to be used there.

The sounds generated by this program are your creations and can be licensed however you see fit. Use them in commercial projects, sell them in asset packs or open source them, you have total control.