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.
SimpleTexting - SimpleTexting offers SMS and text marketing services for companies of all sizes.
Textra - Textra is a seriously beautiful, feature rich SMS and MMS app.
Textmagic - The all-in-one solution for all your business texting needs - marketing campaigns, two-way SMS chats, reminders, notifications, and internal staff communication.
Material Messaging - Material Messaging is a beautiful communication app that lets you send and receive SMS and MMS messages using the intuitive interface while giving you complete control over every aspect of your messaging experience.
EZ Texting - EZ Texting provides SMS marketing solutions to businesses of all sizes.