Fondo · Feb 2026
Secondary roundup describing JSX Tool's browser-based React IDE, key features, and YC-backed launch.
Company research
Public company, workplace, funding, and market signals
Updated Jul 29, 2026
Overview
JSX Tool is a YC-backed browser-first React development tool that combines a Chrome extension with a local dev server to let developers inspect, edit, and style JSX directly in the browser, with AI-assisted prompting and live DOM context.
Primary product
Chrome extension plus local dev server / in-browser IDE for editing and styling React JSX in the browser
Founded
2025
Headquarters
4287 26th St, San Francisco, CA 94131, US
Team size
1-10
Industry
Developer tools
Sub-industry
React development tools / browser-based IDE
Offices
San Francisco, CA, US
Open Positions
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