Ares is a free open source 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 peer to peer network. As a member of the virtual community, you can search and download just about any file shared by other users. Latest versions support BitTorrent protocol and Shoutcast radio stations.

With Ares you can also join chat rooms or host your channel and meet new friends.
•Fast multisource downloads
•Powerful library organizer
•Built-in audio/video player
•Filesharing chat rooms

BearShare is a leading file sharing program. Intuitive design, millions of users, safety features and quick setup - what more could you ask for? How about Free exclusive BearShare music, help with common questions and Free tools!

BearShare Lite removes the bundled software and a cleaner, simpler user experience.

BitComet is a p2p file-sharing freeware fully compatible with Bittorrent, which is one of the most popular p2p protocol designed for high-speed distribution of 100MB or GB sized files. BitComet is a powerful, clean, fast, and easy-to-use bittorrent client. It supports simultaneous downloads, download queue, selected downloads in torrent package, fast-resume, chatting, disk cache, speed limits, port mapping, proxy, ip-filter, etc.

BitTorrent is a torrent client for sharing data via the BitTorrent protocol. The software enables users to share, search, download and upload application, music, video, document, picture and other files. BitTorrent supports download of multiple files in parallel from different peers. For every download or upload the interface shows download and upload speed, file size, file name, progress, seeds, peers etc. Overall usage can be monitored in tabular and graphical views. New torrent or magnet files (compatible with Azureus) can be added through torrent sites or from within BitTorrent.

Some of its advanced features include:
•Bandwidth limiter
•Data transfer quota limiter
•Download scheduler
•IP Blocklist
•Magnet URI
•Data transfer quota limiter
•Proxy support
•Web Interface
•Multiple languages

DC++ is an open source client for Windows for the Direct Connect network. Direct Connect allows you to share files over the Internet without restrictions or limits. The client is completely free of advertisements and has a nice, easy to use interface. Firewall and router support is integrated and it is easy and convenient to use functionality like multi-hub connections, auto-connections and resuming of downloads.
 

DC++ offers these improvements over its predecessors:
•Much more stable. DC++ 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 out.
•No Ads.
•Search is more versatile.
•Hublist is downloadable from multiple servers/sources.

Cabos is a free Gnutella file sharing program. It is based on LimeWire's source code, and has a similar feel in terms of interface. Main features include:

•Mojito Distributed Hash Table (Mojito DHT) support.
•IP2Country support for locale detection.
•Firewall to firewall transfers.
•Proxy transfers.
•Universal Plug and Play support.
•Adware and Spyware free.
•Clean interface.
•iTunes Integration.
•Under 7000k of memory usage.

FrostWire, a BitTorrent client (formerly a Gnutella client), is a collaborative effort from many Open Source and freelance developers located from all around the world.

Using the most recent version of FrostWire allows users to enjoy the best program functionality. Bugs reported in older versions have been fixed for the latest version. Any users with FrostWire 2.5 or earlier MUST update.

Frostwire's features include:
•Completely Free & Open Source!
•Faster Download Speeds
•No Spyware. No Adware. Guaranteed.
•iTunesâ„¢ Compatible!
•Faster Torrent Speeds
•Friendly Online Chat Rooms
•Bittorrent Support!
•Even More Connections
•New & Improved Skins

eMule is a filesharing client which is based on the eDonkey2000 network but offers more features than the standard client.
•Clients use several networks to create one reliable network. (ED2K, Source Exchange, Kad) Kad is now in an open testphase.
•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.

JDownloader is a very easy to use download manager. Downloading from One-click hosters such as Rapidshare.com becomes a lot less annoying. JDownloader assists you using a link grabber, the possibility of downloading huge archives out of catalogue files, or an integrated OCR module to automatically fill in CAPTCHAs.

Features:
•Download several files at once
•Download with multiple connections
•JDownloader has an own powerful OCR module
•Automatic extractor (including password list search)
•Theme Support
•Multilingual
•About 110 hoster and over 300 decrypt plug-ins
•Reconnect with JDLiveHeaderScripts: (1400 router supported)
•Webupdate
•Integrated package manager for additional modules (eg. Webinterface, Shutdown)
•Downloading from catalogue files (formats CCF, RSDF, DLC)

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iMesh is a media and file sharing client with online social network features, available in 9 languages. iMesh operates the first "RIAA-approved" P2P service, allowing users residing in United States and Canada to download music content of choice for a monthly fee in the form of either a Premium subscription or a "ToGo" subscription. A third option is also available for users (residing in either country) to permanently purchase tracks for $0.99 each, without a subscription.

In addition to the paid content, iMesh allows all users (regardless of origin country) access to "non-copyrighted" music and video files. A legalized ringtone download service is also available, allowing users to purchase songs for use as cellphone ringtones.

iMesh was the first company to introduce "swarming" - the ability to download one file from multiple sources, increasing download speed. iMesh was also the first company to introduce a working 'resume' feature, allowing users to pause downloads and resume them at a later time.
The company behind iMesh is also the same company behind BearShare under their MusicLab subsidiary.