Mattermost
YC S12San Francisco, US · Founded 2016 · 120 employees · 2 known investors
Mattermost is a secure team collaboration platform designed to complement Microsoft Teams and Microsoft 365, providing on-premises or private cloud deployment with advanced customization, data control, and integration capabilities for mission-critical and highly regulated environments.
Cloud ComputingCybersecurityDeveloper ToolsEnterprise SoftwareFuture of WorkDevSecOpsCollaborationSecurityOpen Sourcein /mattermost@Mattermost
Founders & leadership· Y Combinator alumni (S12)
Ian TieninFounder/CEO
Investors · 2
In the news
- Mattermost - 2026 Funding Rounds & List of Investors - Tracxntracxn.com · 2021
- YC leads $50M Series B in Mattermost as open source Slack-alternativemattermost.com · 2019
- Enterprise Messaging Platform Mattermost Raises $20 Millionpulse2.com · 2019
- Mattermost Raises $20M in Series A Funding - FinSMEsfinsmes.com · 2019
- Mattermost Raises $20 Million Series A Funding to Bring High-Trust Messaging to Security-Conscious Enterprisesmattermost.com · 2019
- Techmeme: Mattermost, which develops an open source messaging platform, raises $50M Series B led by Y Combinator's Continuity Fund, bringing its total raised to ~$70M (Kyle Wiggers/VentureBeat)techmeme.com