Bartabs is a DWM patch to populate the bar with all the windows' titles (well, not all of them, only those in the active tags; You get it).
It is very similar to Fancybar, although it is actually a modification of Bartabgroups.
Why it is good:
In Fancybar, the background color of the active window title only stretches as far as the title text, defeating point 3. Furthermore, as new windows are added, the titles get all crumpled together, wasting a large space of the bar.
Bartabgroups does not list float titles. Additionally, it suppresses ClkWinTitle, which is a shame for people who bind the scroll wheel to it. (Of course the authors don't even bother to mention it, you are supposed to waste your time figuring it out for yourself.)