# Stewart Butterfield (slim)

> Stewart Butterfield's investments in AI tools on Anchor Terminal, 1Password, Front and Humaans, with each listing's grade and the founders behind it.

- Full: https://www.anchorterminal.com/investors/stewart-butterfield/index.md (~750 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/investors/stewart-butterfield/index.json · canonical https://www.anchorterminal.com/investors/stewart-butterfield/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-28
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Angel investor.

## Companies on Anchor Terminal

- **1Password**, Funding round, July 2021
  - [1Password service accounts, SDKs and Environments MCP](https://www.anchorterminal.com/tools/1password.md), graded BB, 71.8/100
  - Source: https://1password.com/blog/investing-in-our-future-again
- **Front**, Series A, May 2016
  - [Front API + MCP](https://www.anchorterminal.com/tools/front.md), graded B, 63.7/100
  - Source: https://front.com/blog/announcing-our-series-a
- **Humaans**, Series A, October 2022
  - [Humaans](https://www.anchorterminal.com/tools/humaans.md), graded C, 54.6/100
  - Source: https://techcrunch.com/2022/10/04/humaans-raises-15m-to-simplify-hr-tasks-like-onboarding/

## Where they invest

- Secrets & credential vaults, 1
- Customer support & helpdesk, 1
- HR & employee operations, 1

## Founders they backed

- [Sara Teare](https://www.anchorterminal.com/people/sara-teare/), 1Password
- [Dave Teare](https://www.anchorterminal.com/people/dave-teare/), 1Password
- [Roustem Karimov](https://www.anchorterminal.com/people/roustem-karimov/), 1Password
- [Natalia Karimov](https://www.anchorterminal.com/people/natalia-karimov/), 1Password
- [Laurent Perrin](https://www.anchorterminal.com/people/laurent-perrin/), Front
- [Mathilde Collin](https://www.anchorterminal.com/people/mathilde-collin/), Front
- [Giovanni Luperti](https://www.anchorterminal.com/people/giovanni-luperti/), Humaans
- [Karolis Narkevicius](https://www.anchorterminal.com/people/karolis-narkevicius/), Humaans

## Questions

### Which AI tools has Stewart Butterfield invested in?

Anchor Terminal lists 1Password, Front and Humaans backed by Stewart Butterfield.

### How are Stewart Butterfield's companies graded?

On Anchor Terminal's benchmark, 1Password service accounts, SDKs and Environments MCP (BB, 71.8), Front API + MCP (B, 63.7) and Humaans (C, 54.6).

Investors 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.