Research about SMS Capability

Terminologies:
SMS, GMS,

Supporting Frameworks:

JSMPP, 

1.  Support SMPP

2.  2 or 3 people

3.  https://code.google.com/p/jsmpp/

4.  Started from 2007

Status: Not good for GE

Java SMS SDK,  - No

Ozeki Java SMS SDK,  

1.  It is an Ozeki NG SMS Gateway

2.  Not Free

3.  http://www.ozekisms.com/

SMSLib 

1.  Need GSM modems and/or bulk sms operators.

2.  License: Apache

3.  - Too simple

4.  - Very few members

LOGICA SMPP Java API

Open Market SMS
Open Market SMS

Twilio Java SDK
1.  Commercial
2.  Support SMS, MMS

References:
About SMS Providers
Comparision of SMS Gateway
Send SMS Message from Email
2014 Best Text Message Marketing Service Comparisons and Reviews
How to text a cell phone from email?