Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Way2SMS - Way2SMS.com is an online portal based in Hyderabad, India, offering free and unlimited SMS across...
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
AFreeSMS - AFreeSMS is a free web-based service that allows you to send unlimited free SMS messages online, no need to register, just type your message and send unlimited SMS to anywhere around the world for free.
HelpScout - Help Scout is a simple, straightforward way to provide excellent support
SendSMSnow - SendSMSnow is one of the best services over the internet that lets the users to send free SMS in any part of the world in addition to India.