OpenApps
Mattermost logo

Alternatives to Mattermost

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle. It provides team messaging, file sharing, project management and integrations in a self-hosted environment. Find open source and proprietary alternatives that serve similar purposes.

License:NOASSERTION
Stars:32,712
Difficulty:Medium
Pricing:Open-Core
Hosting:Hybrid

Self-hosted alternatives to Mattermost

Open source projects that can replace Mattermost:

Rocket.Chat logo

Rocket.Chat

42,772
NOASSERTION
Rocket.Chat screenshot

Rocket.Chat is a comprehensive open-source communications platform trusted by over 12 million users in 150+ countries. It provides secure team collaboration, omnichannel customer service, and extensive customization options for organizations with high data protection standards.

Key Features

  • Complete Communication Suite:

    • Real-time messaging with rich text
    • Voice and video conferencing
    • Screen sharing and file sharing
    • Threaded conversations
    • Message reactions and mentions
    • Read receipts and typing indicators

  • Omnichannel Customer Service:

    • Live chat widget for websites
    • WhatsApp, Facebook, Instagram integration
    • Email and SMS support
    • Customer queue management
    • Department-based routing
    • Chatbot integration

  • Enterprise-Grade Security:

    • End-to-end encryption
    • LDAP, SAML, OAuth authentication
    • Two-factor authentication
    • Compliance tools (GDPR, HIPAA)
    • Data loss prevention
    • Complete data ownership

  • Extensive Customization:

    • Apps marketplace with 100+ integrations
    • White-labeling capabilities
    • Custom themes and branding
    • REST and Real-time APIs
    • Webhook support
    • Mobile SDKs for custom apps
Element logo

Element

11,819
AGPL-3.0

Element is a feature-rich Matrix client focused on secure communication and collaboration. It provides a user-friendly interface to the Matrix network while maintaining strong privacy and security features through end-to-end encryption.

Key Features

  • Communication Tools:

    • Encrypted messaging
    • Voice and video calls
    • File sharing
    • Screen sharing
    • Group chat rooms
    • Direct messaging

  • Security & Privacy:

    • End-to-end encryption
    • Cross-signing support
    • Secure key backup
    • Device verification
    • Message verification
    • Self-hosted option

  • Collaboration Features:

    • Room management
    • User profiles
    • Message history
    • Multiple device support
    • Cross-platform availability
    • Custom themes

  • Integration Support:

    • Bridges to other platforms
    • Bot integration
    • Widget support
    • Custom widgets
    • API access
    • SSO authentication

More communication projects

Discover other open source projects in the communication category:

Novu
Novu
Novu is an open-source notification infrastructure that provides a unified API for sending notifications across multiple channels including Email, SMS, Push, and Chat. It offers an embeddable notification center, workflow engine, and no-code email editor.
communicationnotifications
Stars
37,058
Relative Popularity
157
License
NOASSERTION
Zulip
Zulip
Zulip is a powerful open-source team chat application that combines the immediacy of real-time chat with the organization of email-style threading, designed for productive team collaboration.
chatteam-collaboration
Stars
22,974
Relative Popularity
112
License
Apache-2.0
Apprise
Apprise
Apprise allows you to send notifications to almost all of the most popular notification services available today such as: Telegram, Discord, Slack, Amazon SNS, Gotify, etc. through a single unified interface.
communicationnotifications
Stars
13,640
Relative Popularity
56
License
BSD-2-Clause
Tinode
Tinode
Tinode is an instant messaging platform with a Go backend and clients for iOS, Android, web, and command line, designed for building chat applications with modern features.
messagingchat
Stars
12,540
Relative Popularity
55
License
GPL-3.0
Gotify
Gotify
Gotify is a simple server for sending and receiving messages in real-time via WebSocket. It provides a sleek web UI, REST API, and supports plugins for extending functionality. Perfect for self-hosted push notifications.
communicationnotifications
Stars
12,770
Relative Popularity
53
License
NOASSERTION
Centrifugo
Centrifugo
Centrifugo is an open-source scalable real-time messaging server that can instantly deliver messages to application users over WebSocket, HTTP-streaming, SSE, GRPC, and WebTransport. It provides a language-agnostic PUB/SUB server for building real-time applications.
communicationwebsockets
Stars
9,002
Relative Popularity
38
License
Apache-2.0
SimpleX Chat
SimpleX Chat
SimpleX Chat is the most private and secure messaging platform with no user identifiers, featuring double ratchet E2E encryption and a unique approach to privacy that doesn't require phone numbers or usernames.
privacyencryption
Stars
8,787
Relative Popularity
37
License
AGPL-3.0
Screego
Screego
Screego is a simple, secure tool to quickly share your screen with one or multiple people via web browser, requiring no installation or registration.
screen-sharingwebrtc
Stars
8,599
Relative Popularity
36
License
GPL-3.0
Mumble
Mumble
Mumble is an open-source, low-latency and high-quality voice chat program built on Qt and Opus. It provides secure, encrypted communication through a client-server architecture with excellent audio quality and minimal delay.
communicationvoip
Stars
6,974
Relative Popularity
31
License
NOASSERTION

Showing 1-9 of 24 projects in communication

Explore by Category

communicationcollaborationchatteam-messagingdevops

Find more projects in these tags