FMOD - FMOD Studio is an audio middleware solution and engine for games.
Freeplane - Freeplane is a powerful and free software for building mind maps.
OpenAL - OpenAL is a cross-platform 3D audio API appropriate for use with gaming applications and many other...
SuperNotecard - Introducing SuperNotecard. SuperNotecard is an online writing tool that features virtual notecards to help arrange facts or scenes, track details, organize paragraphs, and clarify your composition process.
PortAudio - PortAudio is a cross platform, open-source, audio I/O library.
Linked Ideas - A macOS/iOS apps to treat ideas as links of concepts.