Bosca Ceoil
A free, easy to use tool for creating music!
FamiStudio
FamiStudio - NES Music Editor for chiptune artists & homebrewers
Orca
The livecoding environment
ALMAMPlayer
a midi visualizer for cool people
Abundant Music
Procedural Music Generator
KiraStudio
A simple music studio for composing, shaping sound, and automation - with piano roll, effects, and SoundFont support.
Denote
MIDI demake tool for PICO-8
Muser
An automatic music generator for your projects!
Piano Visualizer
Bring your piano music to life!
Piano VFX Basic
Piano VFX Basic is a completely free MIDI visualizer which enables you to create beautiful piano videos.
Maxwell
Software Laser Synth / Abstract Generator
Evaluator
generate sound from very small programs
MIDI2TDW
Convert MIDI files to Thirty Dollar Website songs
Melodizer
a probabilistic melody generator inspired by analog sequencers
PANORAMICAL PRO
A multi-purpose collection of interactive audiovisual landscapes tailored to audiovisualists.
Melodrumatic
Audio plugin that lets you use MIDI to pitch-shift via delay to turn unpitched audio into melodies
SpectralHarp
strum the sound spectrum to create strange sounds
PocketDial
A non-destructive real-time MIDI quantizer for dialing in the pocket of your MIDI performances
Davidic
Procedural music generation
Fractal Music Generator
Application for audio / midi music from fractals.
POLYMORPH ENGINE
Libre game engine based on Ogre3D and Puredata
ＣＲＯＤＲ
A strange free digital synthesizer
PianoGen: Procedural Music Generator
PianoGen: Your Procedural Music Companion, Infinitely Generate Piano Compositions
JAZZ MIDI Sequencer
An old but really simple program for editing MIDIs.