Yes, both TopSMS and Salesmsg offer a Free Trial.
TopSMS is designed for Large Enterprises, Small Business and Medium Business.
Salesmsg is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Salesmsg begins at $35/Month, while pricing details for TopSMS are unavailable.
Some top alternatives to TopSMS includes and undefined.
Some top alternatives to Salesmsg includes SlickText, ExpertTexting, MOBtexting, SimpleTexting, MessageDesk, Texting.io and Falkon SMS.