Twilio - Brings voice and messaging to your web and mobile applications.
CKEditor - Real-time collaborative future-ready rich text editor
Plivo - Plivo simplifies your customer engagement.
TinyMCE - TinyMCE is a content editor that functions as a plug-in for Wordpress websites.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Summernote - Summernote is a JavaScript library that helps users create WYSIWYG editors online.