gnokii-smsd - SMS Daemon for mobile phones
gnokii-smsd-mysql - SMSD plugin for MySQL storage backend
gnokii-smsd-pgsql - SMSD plugin for PostgreSQL storage backend
smsclient - A program for sending short messages (SM / SMS)
if you want Polish....
sms-pl - Send SMs via Polish GSM operators
And may be this one....
smstools - SMS server tools for GSM modems
The others are not sms apps.
But, install one then check if it is working, before installing the next one.
I have the ability to send sms from winxp, but so far I have not even heard of a way to make it work, till now.
Please post back with your success story.
<edit>Google is your friend
Thanks In Advance, Glenn