Mattermost makes a difference.

Our open source, enterprise-grade collaboration platform delivers internet-era productivity to the world’s most highly secure environments. Our customers use Mattermost to communicate privately and securely while they:

Fight COVID
Defend trillions of dollars of financial assets
Protect national and international interests
Ship triple-A video games
Build electric cars
Pioneer space travel
Other work that makes a difference

Primed for performance.

In 2019, we announced a $20M Series A led by Redpoint Ventures, followed by a $50M Series B led by Y Combinator—its largest investment to date—and we are well capitalized to grow.

What’s it like to work here? Read more about our Leadership Principles

We’re committed to
open source.

Mattermost is the world’s largest open source project for digital workplace technology. Collaboratively developed by over 500 contributors, the platform is available in 16 languages with a rich and broad ecosystem of integrations and enhancements.