Thought somebody could use it
No particular order:
Txt180.com
Smsified.com
Phizzle.com
Burstsms.com
Netsize.com
Mobilewithsms.com
Localmantra.com
Callfire.com
Heywire.com
Inuvi.com
Tropo.com
Textmarketer.com
Otair.com
Mailboto.com
Tellmycell.com
Tigertext.com
Clockwork.com
Impactmobile.com
Highconnexion.com
Mobilitrix.com
Coretalk.com...