gtkSMS is a small application which assists in
sending many SMS messages. It includes a phone
book. It uses a program called 'sms' as a backend
(http://www.ceti.pl/~miki/komputery/sms.html).
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.