10€ SMS-Flat - wo ist der Haken ?
TXTmob allows groups of users to share information via cell phone text messaging. Sort of a listserv for cell phones.
RapidSMS is a free and open-source framework for dynamic data collection, logistics coordination and communication, leveraging basic short message service (SMS) mobile phone technology.
SMS-Verteiler für Hamburg
The SMS Server Tools 3 is a SMS Gateway software which can send and receive short messages through GSM modems and mobile phones.
Dt. Microblogging Dienst: SMS, IM/Jabber, RSS, Webinterface
Vergleich der einzelnen Dienste