Founder of a listed tool

Ian Tien

Founder, Mattermost, Inc., named behind the Mattermost listing on Anchor Terminal.

Ian Tien

Founder, Mattermost, Inc.

Ian 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.

What Ian builds

  • Mattermost B · Work & 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 26 October 2026 · the people behind it

Backed by

Questions

Who is Ian Tien?

Ian 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.

What does Mattermost, Inc. make?

Anchor 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.

Who has invested in Mattermost, Inc.?

The sources our research read name Y Combinator, Redpoint Ventures and Battery Ventures.

How are Ian's tools graded?

Mattermost is graded B, 66 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

Sources (4)

These 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). 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.

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.