I've just released a melody generator that I've been working on for a while. It's a small web app that you can use to procedurally generate looping MIDI melodies and then use them in your own music.
The fractalesque algorithm it uses to generate melodies is one I came up with when I was writing a lot of algorave music a decade ago. The MIDI melodies are rendered to sound using the wasm port of Timidity by Feross.
Enjoy!