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  "markdown": "Founder, Mattermost, Inc..\n\nIan Tien is co-founder and CEO of Mattermost, a secure collaboration platform for national security and critical infrastructure organisations, from Y Combinator's Summer 2012 batch. He was previously a product leader for Microsoft Office and OneDrive and holds a dozen patents in Microsoft technologies. He has engineering degrees from Waterloo and Cornell and a Stanford MBA.\n\n- LinkedIn: https://www.linkedin.com/in/iantien/\n\n## What Ian builds\n\n- [Mattermost](https://www.anchorterminal.com/tools/mattermost.md), graded B, 66/100, in Work \u0026 productivity. Mattermost is an open-core team chat server from Mattermost, Inc. that its owner hosts, with channels, threads, calls and playbooks. Agents reach it through the REST API v4, bot accounts, personal access tokens, webhooks and an MCP server. Founder, Mattermost, Inc., researched 2026-10-26.\n\n## Backed by\n\n- [Y Combinator](https://www.anchorterminal.com/investors/y-combinator/)\n- [Redpoint Ventures](https://www.anchorterminal.com/investors/redpoint-ventures/)\n- [Battery Ventures](https://www.anchorterminal.com/investors/battery-ventures/)\n\n## Questions\n\n### Who is Ian Tien?\n\nIan Tien is co-founder and CEO of Mattermost, a secure collaboration platform for national security and critical infrastructure organisations, from Y Combinator's Summer 2012 batch. He was previously a product leader for Microsoft Office and OneDrive and holds a dozen patents in Microsoft technologies. He has engineering degrees from Waterloo and Cornell and a Stanford MBA.\n\n### What does Mattermost, Inc. make?\n\nAnchor Terminal lists Mattermost from Mattermost, Inc.. Mattermost is an open-core team chat server from Mattermost, Inc. that its owner hosts, with channels, threads, calls and playbooks. Agents reach it through the REST API v4, bot accounts, personal access tokens, webhooks and an MCP server.\n\n### Who has invested in Mattermost, Inc.?\n\nThe sources our research read name Y Combinator, Redpoint Ventures and Battery Ventures.\n\n### How are Ian's tools graded?\n\nMattermost is graded B, 66 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://www.ycombinator.com/companies/mattermost\n- https://mattermost.com/\n- https://mattermost.com/contact-us/\n- https://mattermost.com/company/about-us/\n\nThese are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page, /about/#author). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.\n",
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