I use Acme and Plan 9 from Bell Labs, a text editing tool, I edit text. I don't need something to do the programming for me. Acme's ability to run commands by clicking on text is more productive than you're giving it credit for right now. Want another menu item? Just type it into the menu bar! Use a bunch of commands on one file regularly? keep them in the comments. Want to pattern match text snippets and execute commands, no problem it's built in to userland.

I won't call it an IDE because it knows nothing about the types of text you're editing, doesn't do syntax highlighting but it can run a shell in a window, and an HTML renderer and has an email client and a wiki editor and and and