mais.im Alternatives

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.

Open Source

Cisco Jabber lets you access presence, instant messaging (IM), voice, video, voice messaging, desktop sharing, and conferencing.

VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.

Try for free paid Free Trial $4.99 / Monthly (User)

A messaging app for teams who see through the Earth!

Secure messaging, video, calls and sharing for individuals, teams and enterprises

Chat & inbox for teams. One place to talk and stay up-to-date.

Mattermost is an open source alternative to Slack.

Open Source

Fast, simple & secure messaging. Privacy that fits in your pocket.

Open Source

Hibox is a mobile app that primarily functions as a platform for collaboration between team members. The software helps maintain communication while a team works on a project, and it provides privacy while supporting the pipeline.

Symphony transforms the way users communicate effectively and securely with a single workflow application.

An opinionated micro-framework for creating REST-like APIs in Ruby

Facebook Messenger is a faster way to message.

AI-Based Collaboration for Hybrid Teams. Rich media messaging, advanced video and voice conferencing, auto-transcribing and screen sharing. Serendipitous meetings at the water-cooler with your human and AI teammates.

freemium

Jabber.org is an IM service based on XMPP and one of the key nodes on the XMPP network.