avaamo - Simple, Secure Business Messaging
EZ Texting - EZ Texting provides SMS marketing solutions to businesses of all sizes.
SupportKit - Embed Zendesk support into your iOS app with 1 line of code
SimpleTexting - SimpleTexting offers SMS and text marketing services for companies of all sizes.
Fleep for Business - Simple, open collaboration and chat with admin capabilities
Textmagic - The all-in-one solution for all your business texting needs - marketing campaigns, two-way SMS chats, reminders, notifications, and internal staff communication.