[hcs]

There was the JOHNNIAC named after John von Neumann. Several things are named after Elvis Presley, e.g. https://en.wikipedia.org/wiki/Elvis_operator

Not an eponym per se, but Guy Fawkes comes to mind.

Edit (no I'm not reading through the Wikipedia list of eponyms why would you think that):

Gerrit for Gerrit Rietveld (though a fork of Rietveld for svn)

Linux for Linus Torvalds, Debian for two people, TOML (all self-named)

Aldus corp for Aldus Manutius