Open-source alternatives for communication

Microsoft Teams

Communication

Team chat, video meetings and file sharing inside Microsoft 365.

5 open-source swaps

Discord

Communication

Community chat with text channels, voice and video.

4 open-source swaps

Slack

Communication

Team messaging platform with channels, threads and app integrations.

4 open-source swaps

Zoom

Communication

Video conferencing for meetings, webinars and team calls.

3 open-source swaps

Gmail

Communication

Google's email service for personal and business mailboxes.

4 open-source swaps

Superhuman

Communication

Fast, keyboard-driven email client with AI and follow-up reminders.

2 open-source swaps

Twilio

Communication

Cloud APIs for SMS, voice calls and messaging in apps.

2 open-source swaps