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.

BulkSMS - SMS messaging service provider offering two-way SMS communication services.

Textra - Textra is a seriously beautiful, feature rich SMS and MMS app.

Twilio - Brings voice and messaging to your web and mobile applications.

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.

OpenTok - Build a custom video experience using our robust APIs, or add plug-and-play video to your website in minutes using Video Chat Embeds. Start Building for FreeTalk to SalesTalk to Sales .