# Extend UI

Startup, Worldwide.

> open-source UI kit for modern document apps
>
> — in its own words, from extend.ai

- Website: https://www.extend.ai/ui
- Listed since: 2026
- launched: 2026-06-10
- launch post: https://news.ycombinator.com/item?id=48478469
- hn score: 127
- domain created: 2017-12-15
- Last verified: 2026-06-10


## Sources

- Hacker News, "Show HN" — https://news.ycombinator.com/item?id=48478469, read 2026-06-10

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startup.is · https://startup.is/registry/extend-ui · open data: /api/v1, /llms.txt