Founder of a listed tool
Armin Ronacher
Earendil co-founder; shared Pi governance, named behind the Pi listing on Anchor Terminal.
What Armin builds
Pi B · 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 27 October 2026 · the people behind it
Works with
- Colin Daymond Hanna Earendil co-founder; shared Pi governance
- Mario Zechner Pi creator and technical lead; Earendil partner/shareholder
Backed by
Accel Balderton Capital Jan Oberhauser Peter Steinberger Vlad Yatsenko David Cramer Cal Henderson
Questions
Who is Armin Ronacher?
Armin 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.
What does Earendil make?
Anchor 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.
Who has invested in Earendil?
The sources our research read name Accel, Balderton Capital, Jan Oberhauser, Peter Steinberger, Vlad Yatsenko, David Cramer and Cal Henderson.
How are Armin's tools graded?
Pi is graded B, 68.6 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.
Sources (10)
- https://mariozechner.at/posts/2026-04-08-ive-sold-out/
- https://earendil.com/posts/pi-1-0/
- https://mariozechner.at/
- https://x.com/badlogicgames
- https://earendil.com/purpose/
- https://ronacher.eu/
- https://twitter.com/mitsuhiko
- https://www.linkedin.com/in/colindhanna
- https://pi.dev/
- https://www.linkedin.com/company/earendil-works
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.