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Mattermost (YC S12) — Secure collaboration for technical teams

Mattermost appears in Y Combinator's company directory in the Summer 2012 batch, listed 2023-09-19. Secure Collaboration for Technical Teams.

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Mattermost: Accepted into Y Combinator Summer 2012

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Mattermost

New accelerator entry · 2023-09-19 · the record

Summer 2012
batch
120
people
Growth
stage
United States of America
region
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In their words

Mattermost provides secure collaboration for technical and operational teams that work in environments with complex nation-state level security and trust requirements. We serve technology, public sector, national defense and financial services industries with customers ranging from tech giants, to the world’s largest banks, to the U.S. Department of Defense and governmental agencies around the world. Our self-hosted and cloud offerings provide team messaging, file sharing, integrations, audio and screen share, workflow automation and project management on an open source platform deployed by the world’s most secure and mission critical organizations. We co-build the future of collaboration with over 4,000 open source project contributors who’ve provided over 30,000 code improvements towards our shared product vision, which is translated into 20 languages.

What the record says

BatchSummer 2012
Announced2023-09-19
StageGrowth
StatusActive
Team size120
IndustryB2B
Sub-industryB2B -> Productivity
SectorsDevSecOps, Collaboration, Security, Open Source
RegionsUnited States of America, America / Canada, Remote, Fully Remote
BasedSan Francisco, CA, USA; Palo Alto, CA, USA; Remote
HiringNo
Sitehttp://mattermost.com
Previously known asSpinPunch

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Permanent URL: https://mentionfox.com/funding/yc-mattermost
Last updated 2026-09-26
Primary record: Y Combinator directory entry
Mattermost (YC S12) — Secure collaboration for technical teams. MentionFox, 2026-09-26. https://mentionfox.com/funding/yc-mattermost