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  "markdown": "Earendil co-founder; shared Pi governance.\n\nArmin Ronacher co-founded Earendil, a public benefit corporation that builds open-source software and protocols, with Colin Daymond Hanna. Earendil now develops Pi, the open-source coding agent Mario Zechner brought to the company in 2026. Ronacher created the Flask web framework and spent a decade at Sentry before starting Earendil.\n\n- X: https://x.com/mitsuhiko\n\n## What Armin builds\n\n- [Pi](https://www.anchorterminal.com/tools/earendil-pi.md), graded B, 68.6/100, in Agent harnesses. Pi is an open-source terminal coding agent from Earendil, run on the owner's machine with any of 15 or more model providers. It has interactive, print, JSON and RPC modes, a TypeScript SDK and a built-in MCP client. Earendil co-founder; shared Pi governance, researched 2026-10-27.\n\n## Works with\n\n- [Colin Daymond Hanna](https://www.anchorterminal.com/people/colin-daymond-hanna/), Earendil co-founder; shared Pi governance\n- [Mario Zechner](https://www.anchorterminal.com/people/mario-zechner/), Pi creator and technical lead; Earendil partner/shareholder\n\n## Backed by\n\n- [Accel](https://www.anchorterminal.com/investors/accel/)\n- [Balderton Capital](https://www.anchorterminal.com/investors/balderton-capital/)\n- [Jan Oberhauser](https://www.anchorterminal.com/investors/jan-oberhauser/)\n- [Peter Steinberger](https://www.anchorterminal.com/investors/peter-steinberger/)\n- [Vlad Yatsenko](https://www.anchorterminal.com/investors/vlad-yatsenko/)\n- [David Cramer](https://www.anchorterminal.com/investors/david-cramer/)\n- [Cal Henderson](https://www.anchorterminal.com/investors/cal-henderson/)\n\n## Questions\n\n### Who is Armin Ronacher?\n\nArmin Ronacher co-founded Earendil, a public benefit corporation that builds open-source software and protocols, with Colin Daymond Hanna. Earendil now develops Pi, the open-source coding agent Mario Zechner brought to the company in 2026. Ronacher created the Flask web framework and spent a decade at Sentry before starting Earendil.\n\n### What does Earendil make?\n\nAnchor Terminal lists Pi from Earendil. Pi is an open-source terminal coding agent from Earendil, run on the owner's machine with any of 15 or more model providers. It has interactive, print, JSON and RPC modes, a TypeScript SDK and a built-in MCP client.\n\n### Who has invested in Earendil?\n\nThe sources our research read name Accel, Balderton Capital, Jan Oberhauser, Peter Steinberger, Vlad Yatsenko, David Cramer and Cal Henderson.\n\n### How are Armin's tools graded?\n\nPi is graded B, 68.6 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://mariozechner.at/posts/2026-04-08-ive-sold-out/\n- https://earendil.com/posts/pi-1-0/\n- https://mariozechner.at/\n- https://x.com/badlogicgames\n- https://earendil.com/purpose/\n- https://ronacher.eu/\n- https://twitter.com/mitsuhiko\n- https://www.linkedin.com/in/colindhanna\n- https://pi.dev/\n- https://www.linkedin.com/company/earendil-works\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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