Mattermost

Mattermost is a secure team chat, similar to Slack, geared toward development and integrated with Git. Self-hosted, it keeps the company's conversations and files on your own infrastructure.

Project summary: Platform for secure collaboration across the entire software development lifecycle, can be integrated with Gitlab (alternative to Slack).

Official site ↗ Source code
Stars
38,130
License
⊘ Proprietary
Platform
Go, Docker, K8S
Version
v11.9.0-rc1
Communication - Custom Communication Systems
Screenshot of Mattermost Preview of the official site ↗

Similar alternatives

Rocket.Chat

★ 45,690

Rocket.Chat is a complete communication platform (chat, voice, video) that puts data protection first. It's the self-hosted alternative to Slack for companies that need control and compliance.

Communication - Custom Communication Systems MIT

Novu

★ 39,184

Notification infrastructure for developers.

Communication - Custom Communication Systems MIT

Chatwoot

★ 33,251

Chatwoot is a customer support hub (live chat, email, social media) in one place. It's the self-hosted alternative to Intercom and Zendesk, with no per-agent cost.

Communication - Custom Communication Systems ⊘ Proprietary

ntfy

★ 30,915

Push notifications to phone or desktop using HTTP PUT/POST, with Android app, CLI and web app, similar to Pushover and Gotify.

Communication - Custom Communication Systems Apache-2.0

Zulip

★ 25,389

Zulip is a powerful, open source group chat application.

Communication - Custom Communication Systems Apache-2.0

Apprise

★ 16,775

Apprise allows you to send a notification to almost all of the most popular notification services available to us today such as: Telegram, Discord, Slack, Amazon SNS, Gotify, etc.

Communication - Custom Communication Systems MIT