`histedit` does what `rebase -i` does, `hg rebase` does what `rebase` does.

There are a few limitations to `histedit` compared to `git rebase -i` I think: I believe it's possible to split revisions using `rebase -i`, I don't think that can be done using histedit (it has pick, edit, drop and fold). Histedit also misses the (pretty recent I believe) `exec` action of git's rebase -i.