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Zuni

YC S24

London, GB · Founded 2024 · 1 employees · 1 known investors

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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.

GSGeorge Seabridge
George SeabridgeFounderFounder of Zuni, a Chrome extension providing AI-powered assistance for email and message composition.

Investors · 1

Related companies · 4

FloworksFloworks provides AI agents for sales teams to automate prospecting, email outreach, and LinkedIn engagement. The platform targets B2B sales and revenue teams seeking to expand pipeline and improve sales productivity.
KhojKhoj builds open-source AI software tools, including a research workbench, an AI co-worker platform, and a personal assistant agent application. The company targets researchers, knowledge workers, and individuals seeking transparent, locally-runnable AI tools.
FreestyleFreestyle is an AI assistant for Gmail that automates email tasks including reply generation, meeting scheduling, newsletter management, and inbox search using natural language. It serves individual Gmail users seeking to reduce email management overhead.
UserlensUserlens is an AI-powered customer success platform that predicts account churn and monitors user adoption metrics across a company's entire customer base. It integrates with product analytics, CRM, and data warehouse tools to provide customer success teams with account-level insights on usage trends, feature adoption, and at-risk accounts.

Companies working in the same space as Zuni.

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.

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.