Twilio - Brings voice and messaging to your web and mobile applications.
Lets Chat - Open source self-hosted chat app for small teams
Plivo - Plivo simplifies your customer engagement.
Telegram API - We offer two kinds of APIs for developers. The Bot API allows you to easily create programs that use Telegram messages for…
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
TapTalk.io - TapTalk.io is a complete in-app chat SDK and messaging API - Easy integration and customizeable.