Sendm for BSNL/MTNL - Sendm's Social Messaging connects groups. You can SMS your friends wherever they are (Mobile or Social networks) . When the message arrives everyone can see who the other recipients are and can "reply all" (or some) as they would in an email whether they are on their mobile phone or on Orkut, Facebook, Bebo etc...
Messmo is an application that uses the mobile Internet, and combines SMS with the best of instant messaging and email, to give you:
Use real mobile numbers for SMS, Free TXT and attachments. Send to Messmo and non Messmo users.
Create an instant group with a new number. Send one TXT and all of your friends get the message