Pidgin Portable is the versatile Pidgin instant messaging client packaged as a portable app, so you can take your IM settings and buddy lists with you.

PortableApps.com Suite™ is a complete collection of portable apps including a web browser, email client, office suite, calendar/scheduler, instant messaging client, antivirus, audio player, sudoku game, password manager, PDF reader, minesweeper clone, backup utility and integrated menu, all preconfigured to work portably.

SeaMonkey®, Portable Edition is the popular SeaMonkey internet suite (browser, email, newsgroups, chat) bundled with a PortableApps.com Launcher as a portable app, so you can take your whole internet experience with you.

Skype lets you connect to others via instant message, audio conferencing and video phone. It can also call regular phone lines from anywhere in the world. It’s packaged as a portable app so you can communicate on the go.

TeamViewer is a remote PC support/control and screen-sharing tool. You can remote control a partner’s desktop to give online assistance, or you can show your screen to a customer without worrying about firewalls, IP addresses and NAT.

Mozilla Thunderbird®, Portable Edition is the popular Mozilla Thunderbird email client bundled with a PortableApps.com launcher as a portable app, so you can take your email, address book and account settings with you. You can also add in GPG and Enigmail to encrypt and sign your email.

µTorrent is the world’s most popular BitTorrent client. Most of the features present in other BitTorrent clients are present in µTorrent, including bandwidth prioritization, scheduling, RSS auto-downloading and Mainline DHT (compatible with BitComet).

VLC Media Player Portable is the popular VLC media player packaged as a portable app, so you can take your audio and video files along with everything you need to play them on the go.

WinSCP is an open source free SFTP client and FTP client for Windows. Legacy SCP protocol is also supported. Its main function is safe copying of files between a local and a remote computer.

XnView Portable is an easy-to-use photo viewer, organizer and converter. It’s packaged as a portable app, so you view and alter your photos on the go. It’s freeware for personal and educational use.