I’ve never heard about it before, I just found it as I was navigating randomly through the internet; I’m downloading it right now, but when I’ve read Mac Softpedia review I was impressed (it reminded me of Poison).
First, this application received a 5/5 (Softpedia Pick).
Here are the main features as given in Softpedia:

テつキ compatible with: WWW, FTP, Hotline, Napster, OpenNapster, Gnutella, Carracho(*), OpenFT, iTunes, eDonkey and FastTrack (Kazaa, Grokster), BitTorrent and now the Ares network!!
テつキ search for different kinds of files: Music, Videos, Mac and PC Software
テつキ includes a download manager, featuring retries and resumable downloads.
テつキ supports “swarming” downloads from several users and across multiple networks at the same time!
テつキ features AutoSearch, which keeps a list of those exclusive and hard to get files
テつキ allows automatic adding of all tracks from an album of music.
テつキ supports Sharing, so you can give something back to the file sharing community.

Here’s a screenshot of the application from my Mac:

iSwipe P2P client for OS X


And here’s an important notice from Softpedia:
Softpedia guarantees that iSwipe 1.7.10 is 100% CLEAN, which means it does not contain any form of malware, including but not limited to: spyware, viruses, trojans and backdoors.
This software product was tested thoroughly and was found absolutely clean, therefore it can be installed with no concern by any computer user.However, it should be noted that this product will be retested periodically and the award may be withdrawn, so you should check back on this page from time to time.

And finally here’s the link to download the application from.PS: in Softpedia’s review, I’ve noticed the soft is classified as PPC, I don’t know how it runs on Intel Macs…

Posted in 3rd Party Software