I have just released a maintenance update for rxlib. It is based on the latest source code I could find on the web and integrates all patches that I know of.
It contains packages for Delphi 6 to 2006 (which includes Turbo Delphi Win32 of course) and is known to compile with those Delphi versions. I do not have any other Delphi versions or C++ builder so I cannot say whether it may work with them. It will not work with Delphi 1 though.
You can download it from rxlib.sourceforge.net or use the subversion repository there to get it.
NOTES:
* Most rxlib components have been merged into the Jedi Visual Components Library (JVCL) so it is probably a better idea to use the JVCL for new projects.
* I have renamed all units to have a "rx" prefix so there won't be any more name clashes with other units e.g. from the Delphi rtl (strutils comes to mind). This means that you will have to change all uses clauses of your forms it you want to use this versions.