You can check out the cabs provided by Freeza. However, it is intended for his 6.1 rom only, so not all of them will work with other roms, but they are a good resource. MightyRom already have most of these however, the one that it doesn't is "OZ IM" which is the preloaded instant messenger.
http://forum.ppcgeeks.com/showthread.php?t=103045
Click on the download link and check the OEMCAB folder.