Slack RTM API

Slack’s Real Time Messaging API

10 Alternatives To Slack RTM API

Amio

Single developer-friendly API, multiple messengers.

Applozic

Chat API & In-App Messaging SDK for Mobile & Web Apps Innovate fast, save development cost and delight users with a scalable, secure and customizable Chat

Chatflow

Create conversational agents using a visual interface

Chatkit

Use our free Omegle alternative to video chat with strangers instantly and meet cool new people on Chatki. Random video chat available on all mobile devices!
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Motion

Mr-Dave has 3 repositories available. Follow their code on GitHub.

Pullstring

Powering computer conversation across all platforms.
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Telnyx

Telnyx is a cloud-based platform that offers access to carrier grade voice services over the internet.

Wit

Wit – Exciting Chat Story is a superb tool created and published by Playlist Corporation.