Here are three sequencers and a few toys. This is all branch v0.6.21, where there is a bit of a user guide in the README.md in that brnach.
Build it, or here are the OSX and Windows builds and visit vcvrack.com. It's on the plugin manager at vcvrack.com, too.
Short version: enjoy, explore and please help me improve these! Or if you think something similar would make a good next-my-project, I am ears.