PeerGuardian

PeerGuardian 2 is Phoenix Labs’ premier IP blocker for Windows. PeerGuardian 2 integrates support for multiple lists, list editing, automatic updates, and blocking all of IPv4 (TCP, UDP, ICMP, etc), making it the safest and easiest way to protect your privacy on P2P.PeerGuardian 2 is Open Source, meaning the program code is available online for anyone who wants it. Not only does this allow you to make modifications or even branch off into your own project, but it encourages peer review of the code making sure any bugs are eliminated swiftly. Because PeerGuardian 2 is Open Source, you can rest assured there are no backdoors or spyware included.

http://phoenixlabs.org/pg2/

DC++

DC++ is an free open-source, ad and spyware-free client, written in C++ for the Direct Connect protocol originally developed by John Hess, that allows you to share files over the internet with other users.

Features:

• Much more stable. It wastes less memory, is faster, file size is smaller and long queue won’t freeze the whole program. Neo-Modus Direct Connect eats memory and resources.
• You can connect to many hubs at same time and search for files from all of them with same search.
• You can continue downloading the same file from other users if somebody leaves.
• You can see timestamps in the chat. Chat won’t jump to end when you roll back old messages.
• Bot messages wont popup new windows, you can also filter bot messages off.
• No Ads.
• Search is more versatile.
• Hublist is downloadable from multiple servers/sources.

http://www.dcpp.net/

Shareaza

Shareaza is a file sharing system that can harness the power of up to four separate peer-to-peer (P2P) networks, including EDonkey2000, Gnutella, BitTorrent and Shareaza’s native network, Gnutella2 (G2).

Not only that, but Shareaza is completely FREE and won’t show any annoying ads or pop-ups. It won’t install any unwanted third party programs that can wreak havoc with your computer. No spyware, no registration, no “paid version”. Just download and use. Simple.

Features:

• Use the power of 4 P2P Networks simultaneously!
• Download from multiple sources
• Sophisticated file-hashing
• Find that file with Global Searching on Gnutella2!
• Multiple results tabs
• Previews, users comments, and ratings
• Preview filters
• Chat with a friend or someone you’ve just met!

http://www.shareaza.com/

SoulSeek

Soulseek is a unique ad-free, spyware free, and just plain free file sharing application.
One of the things that makes Soulseek unique is our community and community-related features. Based on peer-to-peer technology, virtual rooms allow you to meet people with the same interests, share information, and chat freely using real-time messages in public or private.
Soulseek, with its built-in people matching system, is a great way to make new friends and expand your mind!
Soulseek does not endorse nor condone the sharing of copyrighted materials. You should only share and download files which you are legally allowed to or have otherwise received permission to share. By using this network you agree to this and the other rules which are linked to from this page.
The intention of Soulseek is to help unsigned and/or independent artists find a place in the ever-growing music industry, in a place where discussion and the creation of music can take place. Use of this network for what may be deemed illegal in nature may see users prosecuted by law, and the owners and/or operators of the Soulseek network do not offer protection from said incidents.

http://www.slsknet.org/

ABC

ABC is an improved client for the Bittorrent peer-to-peer file distribution solution. ABC  is based on BitTornado which extended from from Original Bittorrent Core System , coded by Bram Cohen.

Features:

• Multiple downloads in a single window
• Queueing system with priority
• Ability to customize the information ABC displays
• Supporing pause, stop, resume, queue, remove operations
• Minimize to taskbar (and/or system tray)
• Displaying torrent details
• Supporting global setting such as upload and download limiting
• Supporting local setting for each torrent as well
• Supporting advanced settings from BitTornado
• Supporting BitTornado’s super-seed mode
• Choosable upload options when download is done [unlimited, timer, sharesize]
• Torrent won’t be blocked in queue, ABC will reduce torrent’s priority and force it to queue which user can set timer for these conditions
  • if torrent can’t connect tracker
  • if torrent can’t get any byte from other peers
  • if seeding torrent has no one download
• Choosable number of simutaneous download
• Choosable between download to the specific folder or always ask for the folder
• Supporting manual adding torrent from both file and url
• Supporting automatic adding torrent from url (when you click on .torrent file)
• Including make torrent file program
• Displaying number of real peer, seed on tracker (for tracker that supports scrape data)
• Supporing add, delete, queue, pause, stop, resume and query current torrent status via Web Interface

http://pingpong-abc.sourceforge.net/

BitComet

BitComet is a BitTorrent/HTTP/FTP download management software, which is powerful, fast, very easy-to-use, and completely free. It contains many advanced features for BitTorrent download and extends its leading BitTorrent technology to HTTP/FTP to accelerate downloading up to 5 – 10 times faster, or more.

Features:

• BitTorrent Download – fast and powerful
  
  • Preview while Downloading: Preview of MP3, rmvb, wmv, and qt is available during downloading process.
  • Intelligent Connection Optimization: Configuration is automatically set to match your connection type.
  • Intelligent Disk Cache: Memory cache is used to reduce the read/write frequency of your hard drive, therefore increasing service life.
  • Quick Resume: The torrents can be seeded or resumed immediately without time consuming scans.
  • NAT Traversal: Users behind NAT can now connect with each other by UDP.
  • Auto Config ICF (Internet Connection Firewall) and ICS (Internet Connection Sharing) in Windows XP
  • Auto Config UPNP port mapping in router (UPnP support is required in router, Windows XP is required).
  • Option of Disabling and Setting Priority of Files in any torrent: Files can be disabled, so they are not downloaded, or set to higher or lower priority, allowing you to select which files finish first.
  • Trackerless support (Mainline DHT): Torrents can be downloaded when tracker is offline using DHT.
  • Support for Multi-tracker, and utf-8 extension, UDP tracker Protocol v2.

• HTTP/FTP Download – Innovative P2P Technology
  • Preview while Downloading: Preview of mp3, rmvb, wmv, and qt is available during downloading process.
  • Ability of Multi-Section Download: Files are split into several sections which are downloaded at the same time to increase the download speed up to 500% or more.
  • Ability of Multi-Mirror download: Mirror servers are automatically found for the file being downloaded. Data from these servers are downloaded at the same time to increase download speed 300% or more.
  • Ability of Multi-Peer download: BitTorrent technology is integrated into HTTP/FTP protocol, with which BitComet automatically finds other peers and gets data from them to increase your download speed，without additional bandwidth usage of the HTTP server.
  • Support for Unicode: Multi-language web pages and encoded URLs can be correctly handled.
  • Quick Resume: Stopped download tasks can be resumed from where they left off from both HTTP and FTP servers.

• Download Management – Customization Available
  • Global and Per-Task Speed Limit, for Both Upload and Download.
  • Bandwidth Scheduler
  • Custom-built Categories Management.

• User Community – we just begins
  • The user community is online (beta), we already have over 2 Million registered user

Azureus

Azureus implements the BitTorrent protocol using java language and comes bundled with many invaluable features for both beginners and advanced users:

• Multiple torrent downloads
• Upload and download speed limiting, both globally and per torrent
• Advanced seeding rules
• Adjustable disk cache
• Only uses one port for all the torrents
• UPnP sets the forward on your router
• Can use a proxy, for both tracker and peer communications
• Fast resume
• Can set a default download dir and move completed files
• Can import torrents automatically from a set dir
• Highly customizable interface
• IRC plugin included for quick help
• Embedded tracker, host your own torrents, automate your shares (periodic scanning of a dir)…
• Distributed Hash Table: host on it a completely decentralised torrent and/or benefit from it when the tracker is offline.

http://azureus.sourceforge.net/

uTorrent

uTorrent is an efficient and feature rich BitTorrent client for Windows sporting a very small footprint. It was designed to use as little cpu, memory and space as possible while offering all the functionality expected from advanced clients.

Features:

• Multiple simultaneous downloads
• Configurable bandwidth scheduler
• Global and per-torrent speed limiting
• Quick-resumes interrupted transfers
• RSS Downloader
• Trackerless support (Mainline DHT)

http://www.utorrent.com/

eMule

eMule is one of the biggest and most reliable peer-to-peer file sharing clients around the world. Thanks to it’s open source policy many developers are able to contribute to the project, making the network more efficient with each release.
Licence: Open Source

Features:

• Clients use several networks to create one reliable network. (ED2K, Source Exchange, Kad)
  • Kad is now in an open testphase, eMule v0.42 can be enabled to use Kad
• eMule’s Queue and Credit system helps to ensure that everyone will get the file he wants by promoting those that upload back to the network.
• eMule is completely free. eMule is also completely free of any Adware, Spyware, and ect. We do this for fun and knowledge, not for money.
• Each file checked for corruptions while downloading to ensure an error free file.
• The eMules Intelligent Corruption Control helps to speed up the correction of corrupted parts.
• Auto priorities and Source management allows you to start many downloads without having to monitor them.
• The Preview function allows you to look at your Videos and Archives before they are completed. For video previewing, we recommend the Video Lan Client.
• The eMule features webservices and a webserver that allows you to have quick access to and from the internet.
• You can create categories for your download to organize them.
• To find the file you want, eMule offers a wide range of search possibilities which include: Servers (Local, and Global), web based (Jigle, and Filedonkey), and Kad (Still in Alpha).
• eMule also allows you to use very complex Boolean searches that make the searches much more flexible.
• With the messaging and friend system, you can send messages to other Clients and add them as friends. In your friend list, you can always see if a friend is online.
• With the build in IRC client, you can chat with other downloaders and chatters around the globe.

http://www.emule-project.net/