An open source collaboration platform that won’t slow you down.

Give your developers everything they need to boost team productivity with an open source alternative to Microsoft Teams built for developer workflows.

Developers prefer Mattermost to Microsoft Teams

Designed for teams that build, ship, and operate

More than just a general chat platform, Mattermost brings together full-featured messaging, deep integrations with best-of-breed developer toolchains, and powerful workflow automation so you spend less time context switching and more time building.

Unlike Teams, Mattermost is open source and yours to customize. With on-prem and single-tenant private cloud deployment options, your data always stays in your control.

An all-in-one solution for developer collaboration


Group and direct messaging with all the features your team loves and developer tool integrations that turn your channels into collaborative CLI.


Kanban-style boards for teams to manage tasks, hit milestones, and drive alignment across complex workflows.


Checklist-based workflow management for when your team’s processes require collaboration and structure.

Why choose Mattermost over Microsoft Teams

Open source flexibility and extensibility

  • Customize your workspace to your specific needs.
  • Innovation and support from a vibrant OSS community of developers.

Purpose-built for developer workflows

  • Work more effectively with a platform built for technical users.
  • Code syntax highlighting, Markdown formatting, slash commands, extensive integrations, and more!

On-prem or private cloud deployment

  • Deploy behind your firewall or host in a single-tenant secure cloud for superior security.
  • The only collaboration solution where you always maintain data control and sovereignty.

Mattermost Icon MS Teams
Messaging Checkmark icon Checkmark icon
Runbooks Checkmark icon X icon
Kanban boards Checkmark icon X icon
On-prem or private cloud Checkmark icon X icon
Open source Checkmark icon X icon

Go ahead – make Mattermost your own.

Your tools should be tailored to fit the way your team works. Mattermost gives you the ability to customize, extend, and build bespoke integrations — including with legacy systems and even Teams itself.

  • 25,000+ GitHub™ Stars
  • 30,000+ total contributions
  • 4,000+ contributors

The OSS CommunityHeart iconMattermost

More deployment options than Teams

From governments and intelligence organizations to financial services and healthcare companies, teams in high-security and regulated industries trust Mattermost for secure collaboration.

Choose between on-prem and private cloud deployment options that meet your unique security and compliance needs and enable you to retain full control and sovereignty over your data. Deploy in air-gapped and other high-security environments, use EMM for secure mobile comms, and define granular controls for enterprise data archiving to keep data properly secure and accessible.

deployment alternatives asana

Built to accelerate developer workflows

Mattermost goes beyond general-purpose chat with collaboration features designed to help developer teams with up to tens of thousands of concurrent users build code, execute sprints, deploy releases, and manage outages and support escalations all from one place.

Channel-based collaboration with powerful automation and tool integrations to raise messaging to the level of a CLI.

Playbooks for structured workflows that require repeatable execution with predictable outcomes.

Boards for project and product teams that need to manage deliverables, hit their milestones, and stay aligned.

Unlock the full potential of developer collaboration

See Pricing Plans »

Invest in your team’s productivity

Save as much as 70% on developer tools while helping your team reclaim 39% of their time for rapid and sustained ROI.

Eliminate tool frustration with a custom fit

Leverage Mattermost’s open source codebase to build the exact tool your team needs instead of relying on an inflexible, proprietary solution designed for general business users.

Keep your data in your hands

Safeguard sensitive company data and proactively secure your systems with your own IT team. Don’t learn about a vendor’s vulnerabilities in the news and wait for a proprietary fix.

Don’t just take our word for it

Mattermost vs. Microsoft Teams Platform Comparison

Learn why engineering organizations prefer Mattermost for developer workflows and collaboration.

Microsoft Teams
Software Type

Open Source

Open source codebase is supported by community contributors and is publicly available.

Microsoft Teams

Proprietary software

Proprietary software can only be modified by Microsoft; source code is not publicly not available.


On-premise and private SaaS

On-premise platform is easily deployed to your private cloud environment and behind your firewall. Customers have total control over security.

Microsoft Teams

Publicly-hosted SaaS

Provided as a SaaS publicly-hosted product only as part of MS 365 Suite. There is no on-prem or private-cloud option.

Compliance and Data Access

Your data stays in your hands

Keep your data within your existing compliance system. All data in Mattermost, including chat history, can be backed up and exported, and always remains under your ownership and control.

Microsoft Teams

Data managed by Microsoft

Data stored on Microsoft cloud servers. May require additional configuration to implement compliance and retention policies, run analysis on chat data, and migrate data to other systems.

Flexibility and Extensibility

Fully customizable and extensible

Extensible through various existing and custom plugins. All plugins currently are free or come bundled with a Mattermost license. Use custom commands to extend the functionality or integrate with other services via webhooks.

Microsoft Teams

Limited extensibility; additional purchases required

Extend Teams through prebuilt apps to integrate with other platforms; some require additional purchases. Create custom applications to add additional integrations within Teams. Outgoing webhooks are operated through bots that call the external service.


Designed for developer workflows

Designed for developer team collaboration and technical use cases including DevOps processes, incident resolution, and release management.

Microsoft Teams

Designed for general collaboration

Designed for general collaboration for day-to-day activities.



Mobile app allows for voice calls (beta) and chats. Currently only supports a single Mattermost server and no plugins or file management. API can be used to build custom app and add additional layers of security and customization.

Microsoft Teams

Not customizable

Mobile app allows video calls, calendar views, chat, integrated cloud storage (Office 365), dashboards, support for multiple team accounts, etc. No ability to customize the mobile app.

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