Mattermost

Backed byY Combinator

Mattermost provides secure collaboration for technical and operational teams that work in environments with complex nation-state level security and trust requirements.

Location: San Francisco, United States
Founded: 2016
Category: Open Source
Funding: VC-backed

Sources, checked Sep 26, 2026. A fact that is missing is one we could not source, not a zero.

Summary: the company’s own description, ycombinator.com
Founders, founding year, location: ycombinator.com
Backers: ycombinator.com
Funding: ycombinator.com — “Y Combinator Summer 2012”

Category is our own classification. Spotted something wrong? Tell us.

Founders of Mattermost

Ian Tien

Investors backing Mattermost

Y Combinator

Frequently asked questions

What does Mattermost do?

Mattermost provides secure collaboration for technical and operational teams that work in environments with complex nation-state level security and trust requirements.

Where is Mattermost based?

Mattermost is based in San Francisco, United States.

When was Mattermost founded?

Mattermost was founded in 2016.

How much has Mattermost raised?

Mattermost is vc-backed. We have not verified a funding amount.

Who founded Mattermost?

Mattermost was founded by Ian Tien.

Who has invested in Mattermost?

Mattermost is backed by Y Combinator.