OverviewSuggest Edit

Mattermost is a company developing a messaging solution across web, desktop, and native mobile devices. It offers a platform that provides organized conversations in teams and channels, voice, video, and screen sharing, 1-on-1 and group messaging, searchable message history, file, image, and link sharing, and multiple language support.
HQPalo Alto, CA, US
Employee Ratings4.3
Overall CultureA-

Latest Updates

Employees (est.) (Jul 2021)168(+2%)
Job Openings53
Cybersecurity ratingBMore

Key People/Management at Mattermost

Ian Tien

Ian Tien

CEO and Co-Founder
Corey Hulen

Corey Hulen

CTO and Co-Founder
Alison Holmlund

Alison Holmlund

Vice President, Customer Success
Show more

Mattermost Office Locations

Mattermost has an office in Palo Alto
Palo Alto, CA, US (HQ)
530 Lytton Ave #201
Show all (1)

Mattermost Financials and Metrics

Summary Metrics

Founding Date


Mattermost total Funding

$70 m

Mattermost latest funding size

$50 m

Time since last funding

2 years ago

Mattermost investors

Mattermost's latest funding round in June 2019 was reported to be $50 m. In total, Mattermost has raised $70 m
Show all financial metrics

Mattermost Operating Metrics

Feb, 2019

Monthly Downloads

10 k
Show all operating metrics

Mattermost Cybersecurity Score

Cybersecurity ratingPremium dataset



SecurityScorecard logo

Mattermost Online and Social Media Presence

Embed Graph

Mattermost Company Culture

  • Overall Culture



  • CEO Rating



  • Compensation



Learn more on Comparably

Mattermost News and Updates

Mattermost looks to boost DevOps collaboration with cloud platform

Mattermost Inc., provider of an open-source collaboration platform, today announced the launch of Mattermost Cloud, a new software-as-a-service collaboration system designed for DevOps teams and privacy-conscious enterprises. Using Mattermost Cloud, DevOps teams and developers will be able to orche…

Mattermost Launches New SaaS Platform to Optimize DevOps Collaboration

Designed for DevOps teams and privacy-conscious enterprises, Mattermost Cloud brings Mattermost’s industry-leading open-source, self-managed collaboration platform to the cloud Designed for DevOps teams and privacy-conscious enterprises, Mattermost Cloud brings Mattermost’s industry-leading open-sou…

Y Combinator leads $50M round into open-source Slack rival Mattermost

Team chat services such as Slack are experiencing rapid adoption in the enterprise, but some companies have been more hesitant to embrace the technology than others. Organizations with advanced data security needs, such as banks, can’t simply shift employee communications to an external platform ru…

Mattermost raises $50 million to advance its open source Slack alternative

Mattermost, a startup developing an open source alternative to Slack, HipChat, Microsoft Teams, and Google's Hangouts Chat, has raised $50 million.

Mattermost Blogs

Maintainers Need Your Support, Microsoft Further Embraces Linux, and more: Open Source Matters

Welcome to the 3rd edition of Open Source Matters: our regular publication about the latest happenings in open source! Let’s dive into the news. The 2021 Open Source Maintainer Survey Tidelift recently held their first Global Maintainer Summit that brought together open source maintainers to discuss…

What Matters, Episode 23: Docathon 2021 with Carrie Warner

Understanding how something works is a cornerstone to successfully contributing to any project. In this episode of What Matters, we’re diving into all-things documentation, from why product docs are so important to how teams can make theirs better. What Matters, Episode 23: Docathon 2021 PJ sits dow…

Securing XML implementations across the web

In December 2020, we blogged about security issues in Go’s encoding/xml with critical impact on several Go-based SAML implementations. Coordinating the disclosure around those issues was no small feat; we spent months emailing the Go security team, reviewing code, testing and retesting exploits, com…

Mattermost 5.31.8 Extended Support Release (ESR) released

Mattermost dot release 5.31.8 ESR for Team Edition (TE) and Enterprise Edition (EE) is now available for download. If your deployment is affected by issues this dot release fixes, upgrading is recommended. Mattermost 5.31.8 version resolves the following bug: Fixed an issue in clustering where a mut…

Migrating Thousands of Cloud Instances to New Kubernetes Custom Resources

Mattermost’s Kubernetes Operator spins up and manages Mattermost instances running on Kubernetes based on a ClusterInstallation Custom Resource (CR). Mattermost Operator 1.0 has evolved a lot since its release, along with the ClusterInstallation CR in the v1alpha version. As time went by — as with a…

Support for Extended Support Release 5.31 Is Ending

Upgrade to ESR 5.37 for improved security and performance, mobile app compatibility, and enhanced user experience As of October 15, 2021, Mattermost Extended Support Release (ESR) version 5.31 will no longer be supported. If any of your servers are not on ESR 5.37 or later, upgrading immediately is …
Show more

Mattermost Frequently Asked Questions

  • When was Mattermost founded?

    Mattermost was founded in 2011.

  • Who are Mattermost key executives?

    Mattermost's key executives are Ian Tien, Corey Hulen and Alison Holmlund.

  • How many employees does Mattermost have?

    Mattermost has 168 employees.

  • Who are Mattermost competitors?

    Competitors of Mattermost include Consider, Slack and Viber.

  • Where is Mattermost headquarters?

    Mattermost headquarters is located at 530 Lytton Ave #201, Palo Alto.

  • Where are Mattermost offices?

    Mattermost has an office in Palo Alto.

  • How many offices does Mattermost have?

    Mattermost has 1 office.