Bonjour

Bonjour, also known as zero-configuration networking, enables automatic discovery of computers, devices, and services on IP networks. Bonjour uses industry standard IP protocols to allow devices to automatically discover each other without the need to enter IP addresses or configure DNS servers.

µTorrent

After updating to version 1.8, the smallest torrent downloading application on the internet has just gotten better. From better Windows Vista support to a new protocol being supported to being able to control your downloads remotely, µTorrent 1.8 is making a statement.

Google Talk

Google Talk 1.0 is an instant messaging client for Windows. Additionally, it offers free PC-to-PC voice calls, the ability to send and receive voicemails (If the person you're calling isn't available), file transfers, and gmail notifications on your desktop for new messages in your email inbox.

DNA

BitTorrent DNA is a service that enables faster, more reliable, more efficient access to rich media content online. DNA allows you to download richer content including high-bandwidth movies and games that, otherwise, would be too large or too expensive for content providers to distribute.

Ares

Ares 2.0.9.3030 is a free open source P2P file sharing program. It allows users to share digital contents with another users across the Internet. Each user shares his files, and can download from every other user. Ares 2.0.9.3030 supports BitTorrent protocol. It can play Shoutcast radio stations, as well as hosting channels or conducting chat rooms.

WinPcap

WinPcap is a tool to capture and transmit network packets that is Free (open source), delivers High Performance (optimized according standards), Popular (used by many tools), Tested and Reliable (it has been available for years), easy to use for the final user (windows installer), Multi-platform (Windows NT/2000/XP/2003), commercial support in the website of CACE Technologies.

FileZilla

FileZilla is a fast FTP and SFTP client for Windows with a lot of features. FileZilla Server is a reliable FTP server. The client is available under many platforms, binaries for Windows, Linux and Mac OS X are provided. FileZilla Server is an FTP server supported by the same project. It supports FTP and FTP over SSL/TLS.

UltraVNC

UltraVNC is a remote control application based on the VNC protocol. It allows users to remotely control systems and interact with the remote system as if they were physically there. UltraVNC is divided into 2 applications: UltraVNC Server and UltraVNC Viewer. The former is the program that has to be installed in the computer to be controlled, and, the latter, is the client program.

Pidgin

Pidgin is a great IM program available both in Linux and Windows. With this program you can chat with all your contacts, no matter the IM network: MSN, Jabber/XMPP, ICQ, Yahoo, AIM...you just set up all your accounts, and a few seconds later, you are able to send messages (and files in some cases) with everyone.

Wireshark

Wireshark (previously known as Ethereal) is a free network protocol analyzer. Statisics, burst size, output buffer size, losses for multicast data, response time, next and previous marked frames, track and share names, encoded files, dissectors, Ethernet, Token-Ring, serial, etc. It is useful for analysis, troubleshooting, development, and education.

Trillian

Trillian is today´s most innovative single multi-protocol IM client for communication via the Internet. The application is capable of joining users of ICQ, MSN, AOL Instant Messenger (AIM), Yahoo Messenger, IRC and Google Talk into a single chat space.

SoftPerfect Network Protocol Analyzer

A network analyzer (sniffer). It analyzes the data passing through your network.