biteSMS - You love your iPhone as much as we do? You text all the time? Want more features?
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
chompSMS - chompSMS is a communication app developed and published by Delicious for Android and iOS devices.
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
Twinme - Twinme – Private Messenger is a free, secure, instant, and high-definition messaging app that protects your privacy along with giving you full control over each of your relationships and contents.
HelpScout - Help Scout is a simple, straightforward way to provide excellent support