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  "markdown": "Venture firm.\n\n## Companies on Anchor Terminal\n\n- **Deno Land Inc.**, Seed, March 2021, Series A, June 2022, through Four Rivers Ventures\n  - [Deno Sandbox](https://www.anchorterminal.com/tools/deno-sandbox.md), graded D, 50.4/100\n  - Source: https://deno.com/blog/series-a\n- **Docker**, Series C, March 2022\n  - [Docker Agent](https://www.anchorterminal.com/tools/docker-agent.md), graded BB, 76.6/100\n  - Source: https://www.docker.com/blog/docker-raises-series-c-build-share-run/\n- **Docker, Inc.**, Series C, March 2022\n  - [Docker Model Runner](https://www.anchorterminal.com/tools/docker-model-runner.md), graded C, 57.2/100\n  - Source: https://www.docker.com/blog/docker-raises-series-c-build-share-run/\n- **Everyday Software, S.L.**, Series D, October 2026\n  - [Factorial](https://www.anchorterminal.com/tools/factorial.md), graded B, 66.4/100\n  - Source: https://factorial.com/blog/factorial-raises-150m-series-d-becoming-most-valuable-ai-scale-ups-europe/\n\n## Where they invest\n\n- Code execution sandboxes, 1\n- Agent frameworks \u0026 SDKs, 1\n- Local AI, 1\n- HR \u0026 employee operations, 1\n\n## Founders they backed\n\n- [Ryan Dahl](https://www.anchorterminal.com/people/ryan-dahl/), Deno Land Inc.\n- [Bert Belder](https://www.anchorterminal.com/people/bert-belder/), Deno Land Inc.\n- [Solomon Hykes](https://www.anchorterminal.com/people/solomon-hykes/), Docker, Docker, Inc.\n- [Jordi Romero](https://www.anchorterminal.com/people/jordi-romero/), Everyday Software, S.L.\n- [Bernat Farrero](https://www.anchorterminal.com/people/bernat-farrero/), Everyday Software, S.L.\n- [Pau Ramon Revilla](https://www.anchorterminal.com/people/pau-ramon-revilla/), Everyday Software, S.L.\n\n## Questions\n\n### Which AI tools has Four Rivers invested in?\n\nAnchor Terminal lists Deno Land Inc., Docker, Docker, Inc. and Everyday Software, S.L. backed by Four Rivers.\n\n### How are Four Rivers's companies graded?\n\nOn Anchor Terminal's benchmark, Deno Sandbox (D, 50.4), Docker Agent (BB, 76.6), Docker Model Runner (C, 57.2) and Factorial (B, 66.4).\n\nInvestors are named from the companies' own announcements, the investors' own pages, Y Combinator's company pages, public filings and news reports of a round, each with its source. An investor isn't a sign of quality, and nobody can pay to be listed or to change a grade. To correct something or have a page removed, write to privacy@anchorterminal.com.\n",
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