The TurboPower components were among the most popular commercial component libraries and are still used by many Delphi developers as they went open source. Instead of asking individually, I thought I'd ask a single question as to the state of XE2 compatibility for each of the components. TurboPower Abbrevia, AsyncPro, and LockBox as the main ones.
Compatibility includes platform support: XE2 Win32, Win64, Mac OS X. (I doubt that Async Pro would ever go Mac OS X, but perhaps XE2 Win32 at least.)