pidgin

One of the difficulties of traveling, especially if you don't have your laptop with you, is leaving behind your bookmarks and email settings. Security can also be an issue; perhaps the browser you're using on that internet cafe computer has been infected with a virus or a keylogger. Fortunately, there is now a portable alternative that fits into even the tiniest USB flash drive. PortableApps.com provides a completely free, portable, and open source solution for the person on the go: The PortableApps.com Suite.