you might also want to check into these lesser known ones
- Qnext
is a secure P2P communications suite that currently offers Universal Instant Messaging (Qnext, MSN, AIM, Yahoo, ICQ), Video Conferencing, Voice over Internet Protocol (VoIP), File Transfer, File Sharing, Group Text Chat, Online Game, Advanced Photo Sharing, and Remote PC Access.- Gnucleus
was the beginning of a few open-source Gnutella related projects (GWebCache, GnucDNA, GnucNS). Gnucleus itself is a Windows application for accessing the Gnutella and G2 networks.
One of the first released after the introduction of Gnutella in 2000 by Nullsoft. It is also the first client to fully support the G2 network, the future of open protocol P2P- Easter
Sick of all those Napster clones who promise the world and then fail miserably because you're behind a firewall? Enter the brave new world of Easter, operating on the Ultimate point-to-point protocol, email. Easter was developed to fill a niche for 90% of people who want to share from behind their company intranet.
If you're worried about using your email address, simply join any of the free web email services which provide POP access, and use this account for your Easter connection. It also is a nice way to remain anonymous! No IP addresses etc to be traced.
It's free, no Kazaa pop-ups, no hidden tracking software, no irritating "Upgrade now" dialogs.
In the words of the great Mandela, "Written for the people, by the people."- MLdonkey
MLdonkey is a multi-platform multi-networks peer-to-peer client. Originally, it was the first open-source client to access the eDonkey network . Currently, with eDonkey , it supports several large networks, such as Overnet , Bittorrent , Gnutella (Bearshare, Limewire,etc), Gnutella2 (Shareaza), Fasttrack (Kazaa, Imesh, Grobster), Soulseek (beta), Direct-Connect (alpha), and Opennap (alpha). Networks can be enabled/disabled, searches are performed in parallel on all enabled networks, but each file is only downloaded from one network (wait for next release !, but from multiple clients concurrently.
Grokster- Shareaza FREE and No Spyware.
- Neo-Mobius Tired of other file-sharing communities such as Napster, Gnutella, and Scour? Tired of Napster Clones in general? Looking for something new? Get ready to change the way you think about peer-to-peer file-sharing. NeoModus®' Direct Connect™ offers a complete set of tools to locate any type of media.
- eMule is a new filesharing client which is based on the eDonkey2000 network, but offers more features than the standard eDonkey client, because it's opensource but under the restrictions of the GPL License.
- eMule Plus is a new generation eMule compatible client created to improve the original GUI
- Blubster is designed to make the P2P experience uncomplicated for anyone.
- BitTorrent official BitTorrent web site
- Azureus offers multiple torrent downloads, queuing/priority systems (on torrents and files), start/stop seeding options and instant access to numerous pieces of information about your torrents.
- File Spree It offers tons of features, including a very secure encryption, a blazing fast UDP protocol, and a superior transfer protocol all on a decentralized network.
- BT++ (bee tee plus plus) is an improved client for the BitTorrent peer-to-peer file distribution solution
- Ares Ares is a peer-to-peer program to search and download files of any type.
- Azureus is a java bittorrent client. offers multiple torrent downloads, queuing/priority systems (on torrents and files), start/stop seeding options and instant access to numerous pieces of information about your torrents
- TheSHAD0W's EXPERIMENTAL BITTORRENT CLIENT Free
- Burst! FREE, A Bit Torrent Client
and some other which use the Opennap servers
- XNap provides a plugin enabled framework for peer-to-peer (P2P) applications and a client which is based on that framework.
- OpenNap: Open Source Napster Server extends the Napster protocol to allow sharing of any media type, and the ability to link servers together.
- OpenNap-NG
- giFT-OpenNap is a giFT plugin for OpenNap, i.e. with this plugin, you will be able to acess the various OpenNap networks.
- Shuban is a Napster-like client which connects to OpenNap servers.
- jNapsterA set of Java classes for connecting to a Napster Music Server to carry out tasks such as login to a Napster Server, find a song based on a keyword, download a song, get the listing of a specified user's song library
- Ares is a peer to peer file sharing program that enables users to share any digital file including images, audio, video, software, documents, etc. You may now easily publish your files through the Ares Network.
- Napster Fast Search (NFS) is the fastest Napster Search and Download Tool. NFS is a standalone Napster Client. You don't need the offical Napster Client to use it.
Some possible alternatives for the Mac User.