Zuni
YC S24London, GB · Founded 2024 · 1 employees · 1 known investors
Zuni is a Chrome extension that provides AI assistance through a sidebar interface, using content from open browser tabs to help users compose messages and emails.
Also known as Letterhead · Solarflare
AI & Machine LearningEnterprise SoftwareFuture of WorkGenerative AIProductivityAI AssistantUnited KingdomEuropeFully Remote
Founders & leadership· Y Combinator alumni (S24)
Zuni was founded in 2024 by George Seabridge.
GS
George SeabridgeinFounderFounder of Zuni, a Chrome extension providing AI-powered assistance for email and message composition.
Investors · 1
Companies House · registry record
View on Companies House ↗- Registered name
- ZUNI LIMITED
- Company number
- 07225063
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 Apr 2010
- Registered office
- 32e Copenhagen Gardens, Chiswick, London, W4 5NN
- Nature of business (SIC)
- 62020 — Information technology consultancy activities
- Accounts
- last made up to 30 Apr 2025 · next due 31 Jan 2027
- Confirmation statement
- last made up to 15 Apr 2026 · next due 29 Apr 2027
Current officers · 2
- Martin John Barnbrook — secretary, appointed 15 Apr 2010
- Martin John Barnbrook — director, appointed 15 Apr 2010
Source: Companies House public register · retrieved 24 Jul 2026. Contains public sector information licensed under the Open Government Licence v3.0.
In the news
Frequently asked questions
- What does Zuni do?
- Zuni is a Chrome extension that provides AI assistance through a sidebar interface, using content from open browser tabs to help users compose messages and emails.
- Who founded Zuni?
- Zuni was founded by George Seabridge in 2024.
- Who are Zuni's investors?
- Zuni's investors include Y Combinator.
- Where is Zuni headquartered?
- Zuni is headquartered in London, GB.

