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React

A JavaScript library for building user interfaces: a developer writes small reusable components, and React updates the web page when the data changes.

What React is

Written from its maker's own pages, read on 13 October 2026.

React is a JavaScript library for building user interfaces, for web pages and for native apps. Meta owned it until February 2026; since then React, React Native and JSX belong to the React Foundation, an independent foundation hosted by the Linux Foundation, whose eight founding members include Amazon, Meta, Microsoft and Vercel.

A developer builds the interface from components: JavaScript functions that receive data and return what should appear on the screen. The markup is written in JSX, a syntax extension of JavaScript that puts HTML-like tags inside the code. When the data changes, for example when a user types into a field, React updates the screen to match. React handles only the interface, not routing or data fetching; for a full application the React team recommends a framework such as Next.js or React Router. On the server, React can stream HTML to the browser while it is still fetching data. React Native uses the same components to build Android and iOS apps with native views.

React is open source under the MIT license, and its code is in the react/react repository on GitHub. It is free to use.

Made by
React Foundation, hosted by the Linux Foundation (open source; formerly Meta)
Price
Free and open source (read 13 October 2026)
Free plan
free

Who uses it, and for what

One row per story. The grade is for the claim that the business uses this tool, not for its revenue.

StoryWhat it does thereWhenCost statedGradeSource
DocsBot AIFront-end library that the founder taught himself in 2022 to build his AI products.BThe Repository, 16 October 2025, by Rae Morey: From Treehouses to Tech: The Lifelong Friendship Behind DocsBot
Glossa.liveUser-interface library of the web app, visible in the page source; the founder also lists it on TrustMRR.BGlossa.live home page, read 13 October 2026
PolsiaJavaScript library of Polsia's own web app, found in the app's code bundle. version 19.2.5BPolsia Terms of Service and app code, read 12 October 2026
Screenshot to CodeThe frontend library of the app.BScreenshot to Code README on GitHub, October 2026
ThreadMasterRuns the front end of the web app, as the script files in the page source show.BThreadMaster home page, read 15 October 2026
AdleThe website's script bundle includes React, the library that draws the pages.BAdle pricing page, read 15 October 2026
WelmiFramework of the welmi.ai website, which renders entirely by script. single-page websiteBWelmi home page, read 23 October 2026
MausBotBuilds the chat interface of the app.BGitHub: milind-soni/OpenMausBot, README and repository data
ChatDashUser-interface library of the web app, visible in the public bundle. single-page applicationBChatDash site JavaScript bundle, read 27 October 2026
DoCVThe web app's pages are built with it, as the page script shows.BA public page outside the story's source list
ChatbaseUser-interface library of the web app.CIndie Hackers, 2023, interview by Channing Allen: How a college student reached $64,000/mo in 6 months by being an AI first mover
Jenni AIFront-end library of the web application, named in the Tech Lead job post.CDavid Park on X, 9 July 2024: We are hiring a Tech Lead at Jenni AI
Tweet HunterFront-end library of the whole application.CIndie Hackers, 4 March 2022: Interview with co-founder of Tweet Hunter ($20k MRR)
PodsqueezeFront-end library of the web application.CIndie Hackers, 5 October 2023: How Tiago grew an AI SaaS to over 100K ARR in 5 months
SiteGPTUser-interface library in the founder's stack list; Remix is built on it.CStarter Story, 8 October 2023: How my AI side project grew to $15K MRR in just a few months
Neural FramesFramework of the web front end, including the timeline editor.CStarter Story, 16 November 2023: How A Doctorate In Physics Built An AI Video Generation Tool [$17K MRR]
VoicyListed by the founder on TrustMRR as part of the app's frontend stack.CTrustMRR: Voicy, payment-verified revenue profile, synced 13 October 2026
Visualizee.aiUser-interface library of the web app, in the founder-written tech stack on TrustMRR.CTrustMRR markdown profile: Visualizee.ai, revenue synced 14 October 2026
AppAlchemyMain frontend library, used with Next.js.CStarter Story, 9 July 2025: How I Used Reddit to Hit $17K MRR (With ZERO Audience)
SleekUser interface library of the frontend.CTrustMRR: Sleek, Stripe-verified revenue and sale listing
SkillryFrontend framework of the Skillry website, in the founder's tech-stack list.CTrustMRR markdown profile: Skillry, synced 15 October 2026
LaperFront-end framework of the web app, in the seller's TrustMRR tech stack.CTrustMRR profile of Laper, revenue read from Stripe by API key
EightifyFront-end web app of the product.CStarter Story: Eightify breakdown, dated 8 May 2024, marked "Estimated from public sources"
RecallFront-end framework of the web app.CHacker News, Who is hiring threads, January, May and June 2025: Recall job posts by Paul Richards
Vibe3D AIFront-end library of the web app, as listed by the company on Peerlist. ReactJSCPeerlist project page: Vibe3D, November 2025
IndilingoUsed for the web frontend, according to the founder-written tech stack on TrustMRR.CTrustMRR markdown profile: Indilingo, revenue last synced 25 October 2026
VectoSolveFront-end library of the web app, per the founder's stack list.CTrustMRR: VECTOSOLVE, Stripe-verified revenue profile (data as of October 2026)
DecorAIFrontend library listed in the founder-written tech stack on TrustMRR.CTrustMRR profile of DecorAI, read 25 October 2026 (revenue last synced 25 October 2026)
HeadroomFrontend library, according to the founder-written tech stack on TrustMRR.CTrustMRR markdown profile: Headroom, revenue last synced 25 October 2026
MotionflyFront-end framework of the web editor, according to the founder-written tech stack on TrustMRR.CTrustMRR markdown profile: Motionfly (Stripe API key, synced 25 October 2026)
ElyxAIFrontend library, according to the owner-written tech stack on TrustMRR.CTrustMRR profile: Elyx AI, revenue last synced 25 October 2026
WeBuildaFront end of the website editor app.CMicrons success story, 13 September 2024, by Ilya Novohatskyi: Enoq Sold His $4k ARR AI Website Builder Within 21 days. Here's His Story
TapesearchFront end of the web app, as listed on TrustMRR.CTrustMRR: Tapesearch profile (markdown), revenue last synced 27 October 2026
Jetwriter AIUser interface library for the extension.CHacker News job post by jerrygoyal, 2 August 2024: ChatGPT Writer, React Dev
Copilot for ObsidianUser-interface library, listed in the tech stack.CTrustMRR markdown profile: Brevilabs, revenue last synced 27 October 2026
CaptureFlowThe app's user-interface library, by the founder-written tech stack.CTrustMRR: CaptureFlow, verified revenue profile
3D AI StudioUser interface library of the web app, listed in its third-party notices. React 19C3D AI Studio third-party software notices, version 1.2, 11 September 2026
KarumiBuilds the user interfaces of the Karumi web app.CY Combinator job posting: Product Engineer (Full-Stack) at Karumi
SyntaFront-end library of the Synta app, according to the founder's TrustMRR tech stack.CTrustMRR profile: Synta, archived copy of 6 August 2026

Grade A: the tool's maker or a payment processor confirms the use. Grade B: an independent report, or the tool is visible in public code. Grade C: the founder or the company says so.

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