Basically, I'm looking for a merge of teambox, things and redmine. Does anyone knows anything like that? ;)
It should have really nice UI and be extremely simple to use. Cross platform or web/linux.
Currently I'm using teambox (ok, it's not a to-do, but works great), but they have a lot of unnecessary stuff (that's a pm thing after all) and no prioritization, etc.
Also, it would be nice to have sub-tasking of any level (it turned out that just 3 levels are needed at most: classification of activity -> groups of tasks -> tasks).