de is a programmer's editor. (Where that programmer happens to be driusan.)
It's kind of like a bastard child of vim and Plan 9's acme editor, because vim feels inadequate on a computer with a mouse after using acme, and acme feels inadequate on a computer with a keyboard after using vi.
Like vim, it's a modal editor with syntax highlighting that uses hjkl for movement. Like acme, it attempts to exploit your current OS environment instead of replacing it and tries to make the mouse useful.
See USAGE.md for usage instructions.
It should be installable with the standard go tools:
go get -u github.com/driusan/de/...
Then as long as $GOPATH/bin is in your path, you can launch with de [filename]
There's now a #de channel on gophers.slack.com for users of this editor.