Mattermost

mattermost.com
Team Collaboration
Weekend Project

Collaboration Platform for Mission Critical Work

How to Replace Mattermost

Overview

Mattermost is a secure, self-hosted collaboration platform designed for mission-critical operations in government, defense, and enterprise environments. It provides real-time communication, workflow automation, and AI-powered capabilities while maintaining complete data sovereignty and control. The platform enables teams to collaborate securely across channels, integrate with mission-critical tools, and respond to incidents with resilience and speed.

Features

42 features across 15 categories

AI(9)

Agent Control PlaneAIPremium

Ensure AI-powered assistance operates within strict security boundaries by user and channel

Agents Token AccountingAIPremium

Track LLM usage at user level to optimize performance and costs

AI-Enhanced Search and RAGAIPremium

Use semantic understanding and Retrieval-Augmented Generation for highly relevant, context-aware answers across workspace

Bring-Your-Own & Multi-LLM IntegrationAI

Integrate privately hosted language models into Mattermost with support for multiple AI/LLM service backends

Contextual Summarization and CompositionAIPremium

Leverage AI to provide concise summaries and generate relevant content based on discussion context

Enterprise LLM ManagementAIPremium

Efficiently manage and deploy large language models with granular billing and usage tracking at user, group, or team level

Interactive AI Bot SupportAI

Integrate AI-driven bots that assist with workflows, provide real-time updates, and automate routine tasks

Sovereign AIAIPremium

Secure, mission-critical operations with full data sovereignty, deployable in air-gapped, private, or sovereign cloud environments

Universal Connector with Model Context Protocol (MCP)AIPremium

Enable AI to securely search across enterprise systems and take action in real-time using standardized framework

Also in: monday.com, Notion, Airtable

Access Control(2)

Advanced Access Controls

Configure channels as read-only, restrict mentions and emoji reactions, and lock down channels for admin-only modification

Guest Accounts

Bring external users into Mattermost instance as guests with limited permissions for restricted access

Also in: Kubernetes Dashboard, Lacework, LastPass

Communication(8)

1:1 Audio Calls and Screen Sharing

Call another user to start a 1-1 audio discussion with optional screen sharing across web, desktop, and mobile

Calls with Live-Text Transcription & AI SummariesAIPremium

Capture every spoken word in real-time and automatically generate AI-powered summaries for mission-critical communication

Channels

Channel-based messaging including 1-1, group messaging, public and private channels with file sharing across web, PC, Mac, iOS, and Android devices

Group Calling and Screen Share

Streamline real-time collaboration with group audio calling and screen share up to approximately 50 concurrent users per self-hosted server

Message Priority

Allow end users to specify message priority as Standard, Important, or Urgent to elevate focus

Native Audio Calling

Built-in audio calling capabilities for real-time communication

Real-Time Channel BriefingAIPremium

Integrate live transcription, call recordings, and automated summaries for coordinated remediation and situational awareness

Video IntegrationsPremium

Enable seamless video calls, screen sharing, and chat integration with Pexip, Zoom, and Microsoft Teams

Also in: Jobber, Jira, Insightly

Customization(1)

Custom Branding, Themes, and Emojis

Match organization branding by customizing site name, login images, text, and theme colors

Also in: monday.com, Obsidian, Smartsheet

Deployment(1)

Flexible Deployment

Deploy on-premise, in cloud, or in air-gapped networks with self-hosting options

Also in: Kubernetes Dashboard, Hugging Face, Bitwarden

Formatting(1)

Markdown Compatibility

Support for Markdown technical formatting standard with text formatting, code snippets, media embedding, tables, and status indicators

Integration(4)

AD/LDAP User Sync

Seamlessly synchronize user attributes and group memberships from Active Directory or LDAP directories

Integrations PlatformPremium

Operational extensibility with pre-packaged, source-available connectors, automations, and templates for rapid systems integration

Microsoft Teams Messaging IntegrationPremium

Connect users across Microsoft Teams and Mattermost for federated communications

Operational and DevOps IntegrationsPremium

Seamlessly integrate with modern toolchains and legacy systems with pre-packaged connectors for common developer tools

Also in: monday.com, Notion, Airtable

Localization(1)

Multiple Language Support

Support for 20+ languages including English, Chinese, French, German, Japanese, Spanish, and more

Notifications(2)

Persistent Notifications

Ensure urgent messages remain visible until acknowledged or replied to with configurable notification frequency

System-Wide Notifications

Notify users across teams of system maintenance, service changes, and announcements using system-wide banners

Organization(4)

Channel Categorization

Group related channels into custom sections to improve navigation and prioritize conversations in high-volume workspaces

Custom User Groups

Create custom user groups to mention and notify up to 256 users working together on projects or functions

Hashtags

Tag key topics, themes, or initiatives directly within conversations to enhance discoverability and organization

Threaded Discussions

Organize discussions within channels using threaded discussions and thread inbox to follow-up on conversations

Productivity(2)

Compact View

Increase efficiency of technical teams with compact display views of discussions and tooling notifications

Multi-Window Desktop

Open multiple chat windows simultaneously to enhance multitasking and keep priority conversations visible

Security(3)

Advanced LoggingPremium

Comprehensive tracking of all system activities for detailed auditing and troubleshooting

Multifactor Authentication (MFA)

Add extra layer of security beyond username and password to prevent unauthorized access

Single Sign-On (SSO)

Log into multiple applications with single credentials, supporting SAML, OpenID Connect, and OAuth 2.0

Support(2)

Community Support

Peer-to-peer community support forums for all Mattermost offerings

Professional SupportPremium

Business hours support from 8am to 8pm US Pacific Time with next business day response time via email and ticketing system

Workflow(1)

PlaybooksPremium

Integrated playbooks for mission-critical workflows and incident response

Pricing

Entry

Free
  • Channel-based collaboration
  • Messaging, file sharing, and link previews
  • 1:1 audio calls and screen sharing
  • Threaded discussions
  • Core search up to 3 million posts
  • Custom branding and themes
  • Hashtags
  • Channel categorization
  • Multi-language support (20+ languages)
  • Multi-window desktop
  • Compact view
  • Markdown compatibility
  • Message priority
  • Persistent notifications
  • Guest accounts
  • Custom user groups
  • System-wide notifications
  • Multifactor authentication
  • Single sign-on
  • AD/LDAP user sync
  • Advanced access controls
  • Community support

Professional

Contact Sales
  • Everything in Entry
  • Professional Support (8am-8pm US Pacific, next business day response)
  • Interactive AI Bot Support
  • Bring-your-own & multi-LLM integration
  • Integrations platform
  • Operational and DevOps integrations

Enterprise

Custom
  • Everything in Professional
  • Agent control plane
  • Agents token accounting
  • Sovereign AI
  • Contextual summarization and composition
  • Real-time channel briefing
  • Universal Connector with Model Context Protocol (MCP)
  • Advanced logging
  • AI-enhanced search and RAG
  • Enterprise LLM management
  • Calls with live-text transcription & AI summaries
  • Video integrations
  • Microsoft Teams messaging integration
  • High-scale group calling and screen share options

Cost Calculator

Pricing data not available for Mattermost. Check their website for current pricing.

Build vs Buy

Should you build a Mattermost alternative or buy the subscription? Estimate based on 42 features.

Buy Mattermost

Better Value
Monthly costContact Sales
3-year totalVaries
Time to deployDays

Build Your Own

Development cost$24,000
Maintenance$360/mo
3-year total$36,960
Dev time~2 months

Buying Mattermost saves ~$36,960 over 3 years vs building.

Estimates based on 42 features and a BuildScore of 5/5. Actual costs vary.

Integrations

7 known integrations