Free International SMS

During my eternal quest for freebies, I’ve come across many sites that pretend to offer free sms but most of the time they never work…
Here are the only sites that I’ve found that offer truly FREE International SMS.

Callwave SMS (beta)

Callwave allows you to send 10 one-part sms per day for International users. For US, it’s unlimited. Requires registration & phone activation.
I prefer Callwave over other services since it provides you with a desktop widget for Windows Sidebar, Yahoo Widgets & Dashboard. (Callwave have just updated their service with Visual Voicemail but before that you could send up to 5 5-part sms per day!).

Click here for web interface.

Wadja

Wadja is a mobile community like Facebook. However, Wadja also allows you to send free sms to your friends. (I don’t how many sms you can send… but I think it’s unlimited)
Requires registration & phone activation. Register at wadja.com

Text4Free.net

Text4Free.net does not require any registration but the number of international carriers is limited. (for e.g. you have only Emtel for Mauritius)
Edit: Emtel users can still use the Emtelfun website to send up to 5 sms to Emtel numbers only.
Requires registration.
Thanks to Yashvin for the tip.