aMSN Messenger is a multi protocol, free and open source messaging program. It’s available for a wide range of operating systems.
Finally, the long-awaited 0.96 release is out! It contains several bugfixes to the release candidate, most important ones being: a) you can now send files to Windows Live Messenger users b) the connectivity checker is a lot more reliable. If you are upgrading from 0.95 and skipped the Release Candidate, you will also find support for the new protocol MSNP12 (with support for Personal Messages), enhanced webcam logs, ability to see your contacts’ display pictures in the contact list, new menus, etc… Enjoy!