Source: https://seerepo.com/r/gatsbyjs/gatsby/built Markdown source: https://seerepo.com/r/gatsbyjs/gatsby/built.md Description: gatsby is a JavaScript repo built with React, Express, express-graphql, react-reconciler, @gatsbyjs/reach-router, and 3 more. It connects to GitHub. # What is gatsby built with? gatsby is a JavaScript repo built with React, Express, express-graphql, react-reconciler, @gatsbyjs/reach-router, and 3 more. It connects to GitHub, makes its content with react-markdown, unist-util-remove, unist-util-visit, @mdx-js/react, remark-mdx, and 12 more, validates its data with prop-types, @hapi/joi, and joi, is tested with Testing Library, msw, Jest, memfs, nock, and 2 more, and uses cache-manager. It has 344,142 written lines, with 1,688 test files. Read on November 5, 2026, at commit 516700a. Repository: https://github.com/gatsbyjs/gatsby ## Frontend (deprecated-packages/gatsby-admin) ### The base - **[React](https://seerepo.com/uses/react)**: 17 files ### Styles - **@emotion/react**: 2 files - **Normalize.css**: 1 file ### Interface - **prism-react-renderer**: 1 file - **[react-error-boundary](https://seerepo.com/uses/react-error-boundary)**: 1 file ### Icons - **react-icons**: 2 files ## Support (deprecated-packages/gatsby-admin) ### Content - **[react-markdown](https://seerepo.com/uses/react-markdown)**: 1 file - **unist-util-remove**: 1 file ### Other - **algoliasearch**: 1 file - **Lodash**: 1 file - **query-string**: 1 file - **react-helmet**: 1 file - **slugify**: 1 file - **socket.io-client**: 1 file - **subscriptions-transport-ws**: 1 file ## Frontend (deprecated-packages/gatsby-image) ### The base - **[React](https://seerepo.com/uses/react)**: 2 files ## Support (deprecated-packages/gatsby-image) ### Validation - **[prop-types](https://seerepo.com/uses/prop-types)**: 2 files ### Testing - **Testing Library**: 1 file ## Support (deprecated-packages/gatsby-plugin-gatsby-cloud) ### Testing - **msw**: 2 files ### Other - **fs-extra**: 6 files - **Lodash**: 2 files ## Frontend (deprecated-packages/gatsby-plugin-glamor) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ### Styles - **glamor**: 1 file ## Support (deprecated-packages/gatsby-plugin-graphql-config) ### Other - **fs-extra**: 1 file ## Support (deprecated-packages/gatsby-plugin-netlify-cms) ### Tools - **copy-webpack-plugin**: 1 file - **html-webpack-plugin**: 1 file - **mini-css-extract-plugin**: 1 file ### Other - **Lodash**: 1 file ## Frontend (deprecated-packages/gatsby-recipes) ### The base - **[React](https://seerepo.com/uses/react)**: 12 files ### Interface - **ink**: 1 file - **ink-spinner**: 1 file ## Backend (deprecated-packages/gatsby-recipes) ### The base - **[Express](https://seerepo.com/uses/express)**: 1 file · [in packages/gatsby/package.json](https://github.com/gatsbyjs/gatsby/blob/516700a1dca1e982b6d098ab57230b25e0318a1f/packages/gatsby/package.json) ## Support (deprecated-packages/gatsby-recipes) ### The base - **express-graphql**: 1 file - **react-reconciler**: 1 file ### Content - **unist-util-remove**: 2 files - **[unist-util-visit](https://seerepo.com/uses/unist-util-visit)**: 2 files - **@mdx-js/react**: 1 file - **remark-mdx**: 1 file - **[remark-parse](https://seerepo.com/uses/remark-parse)**: 1 file - **remark-stringify**: 1 file - **[unified](https://seerepo.com/uses/unified)**: 1 file ### Validation - **@hapi/joi**: 18 files - **[prop-types](https://seerepo.com/uses/prop-types)**: 1 file ### Testing - **Jest**: 1 file ### Tools - **Babel**: 8 files - **Prettier**: 2 files - **@graphql-tools/schema**: 1 file - **chokidar**: 1 file - **glob**: 1 file - **MDX**: 1 file - **mkdirp**: 1 file - **resolve-from**: 1 file ### Other - **fs-extra**: 10 files - **Lodash**: 7 files - **GraphQL**: 5 files - **node-fetch**: 5 files - **@hapi/hoek**: 3 files - **execa**: 2 files - **is-url**: 2 files - **subscriptions-transport-ws**: 2 files - **.ENV**: 1 file - **@graphql-tools/utils**: 1 file - **chalk**: 1 file - **cors**: 1 file - **debug**: 1 file - **detect-port**: 1 file - **graphql-subscriptions**: 1 file - **graphql-type-json**: 1 file - **mitt**: 1 file - **SemVer**: 1 file - **strip-ansi**: 1 file - **terminal-link**: 1 file - **uuid**: 1 file - **ws**: 1 file ## Backend (deprecated-packages/gatsby-telemetry) ### The base - **[Express](https://seerepo.com/uses/express)**: 1 file · [in packages/gatsby/package.json](https://github.com/gatsbyjs/gatsby/blob/516700a1dca1e982b6d098ab57230b25e0318a1f/packages/gatsby/package.json) ## Support (deprecated-packages/gatsby-telemetry) ### Other - **fs-extra**: 3 files ## Support (packages/babel-plugin-remove-graphql-queries) ### Tools - **Babel**: 1 file ## Support (packages/babel-preset-gatsby) ### Tools - **Babel**: 2 files ## Frontend (packages/create-gatsby) ### Interface - **enquirer**: 4 files ## Support (packages/create-gatsby) ### Validation - **joi**: 1 file ### Other - **common-tags**: 2 files - **fs-extra**: 2 files - **configstore**: 1 file - **execa**: 1 file - **terminal-link**: 1 file ## Support (packages/gatsby-adapter-netlify) ### Testing - **memfs**: 1 file ### Other - **fs-extra**: 4 files - **fastq**: 1 file ## Frontend (packages/gatsby-cli) ### The base - **[React](https://seerepo.com/uses/react)**: 10 files ### Interface - **ink**: 9 files - **boxen**: 1 file - **ink-spinner**: 1 file - **progress**: 1 file - **prompts**: 1 file ## Support (packages/gatsby-cli) ### Validation - **joi**: 1 file ### Tools - **Babel**: 4 files - **@jridgewell/trace-mapping**: 1 file - **envinfo**: 1 file - **resolve-cwd**: 1 file - **yargs**: 1 file ### Other - **fs-extra**: 3 files - **Lodash**: 3 files - **Redux**: 3 files - **signal-exit**: 3 files - **stack-trace**: 3 files - **chalk**: 2 files - **common-tags**: 2 files - **execa**: 2 files - **node-fetch**: 2 files - **SemVer**: 2 files - **strip-ansi**: 2 files - **hosted-git-info**: 1 file - **url**: 1 file ## Frontend (packages/gatsby-codemods) ### The base - **[React](https://seerepo.com/uses/react)**: 34 files ### Styles - **@emotion/styled**: 2 files ## Support (packages/gatsby-codemods) ### Validation - **[prop-types](https://seerepo.com/uses/prop-types)**: 2 files ### Tools - **Babel**: 2 files - **recast**: 2 files - **jscodeshift**: 1 file ### Other - **GraphQL**: 2 files - **execa**: 1 file ## Support (packages/gatsby-core-utils) ### Content - **[file-type](https://seerepo.com/uses/file-type)**: 1 file ### Testing - **msw**: 1 file ### Tools - **ci-info**: 1 file - **resolve-from**: 1 file ### Other - **fs-extra**: 7 files - **got**: 3 files - **hash-wasm**: 2 files - **configstore**: 1 file - **fastq**: 1 file - **proper-lockfile**: 1 file - **tmp**: 1 file - **url**: 1 file - **xdg-basedir**: 1 file ## Frontend (packages/gatsby-graphiql-explorer) ### The base - **[React](https://seerepo.com/uses/react)**: 3 files ### Interface - **graphiql**: 3 files ## Support (packages/gatsby-graphiql-explorer) ### Tools - **graphiql**: 1 file ### Other - **GraphQL**: 1 file - **regenerator-runtime**: 1 file ## Support (packages/gatsby-legacy-polyfills) ### Other - **event-target-polyfill**: 1 file - **object-assign**: 1 file - **whatwg-fetch**: 1 file ## Frontend (packages/gatsby-link) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Support (packages/gatsby-link) ### The base - **@gatsbyjs/reach-router**: 2 files ### Validation - **[prop-types](https://seerepo.com/uses/prop-types)**: 1 file ### Testing - **Testing Library**: 1 file ## Support (packages/gatsby-page-utils) ### Tools - **chokidar**: 1 file ### Other - **micromatch**: 2 files ## Frontend (packages/gatsby-plugin-canonical-urls) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Support (packages/gatsby-plugin-canonical-urls) ### Other - **url**: 1 file ## Support (packages/gatsby-plugin-catch-links) ### Other - **escape-string-regexp**: 1 file ## Support (packages/gatsby-plugin-coffeescript) ### Tools - **CoffeeScript**: 1 file ## Frontend (packages/gatsby-plugin-cxs) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Frontend (packages/gatsby-plugin-facebook-analytics) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Support (packages/gatsby-plugin-facebook-analytics) ### Other - **common-tags**: 1 file ## Frontend (packages/gatsby-plugin-feed) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Support (packages/gatsby-plugin-feed) ### Content - **rss**: 1 file ### Other - **common-tags**: 1 file - **fs-extra**: 1 file - **Lodash**: 1 file ## Frontend (packages/gatsby-plugin-fullstory) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Frontend (packages/gatsby-plugin-google-analytics) ### The base - **[React](https://seerepo.com/uses/react)**: 2 files ## Support (packages/gatsby-plugin-google-analytics) ### Validation - **[prop-types](https://seerepo.com/uses/prop-types)**: 1 file ### Testing - **Testing Library**: 1 file ### Other - **minimatch**: 1 file - **web-vitals**: 1 file ## Frontend (packages/gatsby-plugin-google-gtag) ### The base - **[React](https://seerepo.com/uses/react)**: 2 files ## Support (packages/gatsby-plugin-google-gtag) ### Validation - **[prop-types](https://seerepo.com/uses/prop-types)**: 1 file ### Other - **minimatch**: 1 file ## Frontend (packages/gatsby-plugin-google-tagmanager) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Support (packages/gatsby-plugin-google-tagmanager) ### Other - **common-tags**: 1 file - **web-vitals**: 1 file ## Frontend (packages/gatsby-plugin-image) ### The base - **[React](https://seerepo.com/uses/react)**: 11 files ## Support (packages/gatsby-plugin-image) ### Validation - **[prop-types](https://seerepo.com/uses/prop-types)**: 4 files ### Testing - **Testing Library**: 2 files ### Tools - **Babel**: 4 files - **chokidar**: 1 file ### Other - **common-tags**: 4 files - **camelcase**: 2 files - **fs-extra**: 2 files ## Frontend (packages/gatsby-plugin-jss) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Frontend (packages/gatsby-plugin-manifest) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Support (packages/gatsby-plugin-mdx) ### Content - **[unified](https://seerepo.com/uses/unified)**: 3 files - **[unist-util-visit](https://seerepo.com/uses/unist-util-visit)**: 3 files - **vfile**: 2 files - **gray-matter**: 1 file - **mdast-util-mdx**: 1 file - **mdast-util-to-hast**: 1 file - **mdast-util-toc**: 1 file ### Tools - **MDX**: 4 files - **Webpack**: 2 files - **acorn**: 1 file - **acorn-jsx**: 1 file - **astring**: 1 file ### Other - **deepmerge**: 2 files - **fs-extra**: 1 file ## Frontend (packages/gatsby-plugin-offline) ### The base - **[React](https://seerepo.com/uses/react)**: 2 files ## Support (packages/gatsby-plugin-page-creator) ### Tools - **globby**: 2 files - **chokidar**: 1 file ### Other - **@sindresorhus/slugify**: 5 files - **Lodash**: 4 files - **fs-extra**: 1 file ## Support (packages/gatsby-plugin-react-helmet) ### Other - **react-helmet**: 1 file ## Support (packages/gatsby-plugin-sharp) ### Content - **[sharp](https://seerepo.com/uses/sharp)**: 1 file ### Other - **fs-extra**: 3 files - **debug**: 1 file - **Lodash**: 1 file ## Frontend (packages/gatsby-plugin-sitemap) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Support (packages/gatsby-plugin-sitemap) ### Tools - **sitemap**: 1 file ### Other - **common-tags**: 1 file - **minimatch**: 1 file ## Frontend (packages/gatsby-plugin-styled-components) ### The base - **[React](https://seerepo.com/uses/react)**: 2 files ### Styles - **styled-components**: 2 files ## Frontend (packages/gatsby-plugin-styled-jsx) ### Styles - **styled-jsx**: 1 file ## Frontend (packages/gatsby-plugin-styletron) ### The base - **[React](https://seerepo.com/uses/react)**: 2 files ## Frontend (packages/gatsby-plugin-typography) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Backend (packages/gatsby-plugin-utils) ### The base - **[Express](https://seerepo.com/uses/express)**: 1 file · [in packages/gatsby/package.json](https://github.com/gatsbyjs/gatsby/blob/516700a1dca1e982b6d098ab57230b25e0318a1f/packages/gatsby/package.json) ## Support (packages/gatsby-plugin-utils) ### Content - **[sharp](https://seerepo.com/uses/sharp)**: 1 file ### Validation - **joi**: 2 files ### Testing - **msw**: 1 file ### Other - **fs-extra**: 3 files - **fastq**: 2 files - **url**: 2 files - **got**: 1 file - **mime**: 1 file ## Frontend (packages/gatsby-react-router-scroll) ### The base - **@gatsbyjs/reach-router**: 2 files - **[React](https://seerepo.com/uses/react)**: 2 files ## Support (packages/gatsby-react-router-scroll) ### The base - **history**: 1 file ### Validation - **[prop-types](https://seerepo.com/uses/prop-types)**: 1 file ### Testing - **Testing Library**: 1 file ## Frontend (packages/gatsby-remark-autolink-headers) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Frontend (packages/gatsby-remark-code-repls) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Support (packages/gatsby-remark-code-repls) ### Validation - **[prop-types](https://seerepo.com/uses/prop-types)**: 1 file ## Support (packages/gatsby-remark-images-contentful) ### Other - **Axios**: 1 file ## Frontend (packages/gatsby-remark-prismjs) ### The base - **[React](https://seerepo.com/uses/react)**: 5 files ## Frontend (packages/gatsby-script) ### The base - **@gatsbyjs/reach-router**: 1 file - **[React](https://seerepo.com/uses/react)**: 1 file ## Support (packages/gatsby-sharp) ### Content - **[sharp](https://seerepo.com/uses/sharp)**: 1 file ## Frontend (packages/gatsby-source-contentful) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Support (packages/gatsby-source-contentful) ### Testing - **nock**: 2 files - **Testing Library**: 1 file ### Other - **Lodash**: 6 files - **chalk**: 2 files - **common-tags**: 2 files - **fastq**: 1 file - **fs-extra**: 1 file - **json-stringify-safe**: 1 file - **node-fetch**: 1 file - **SemVer**: 1 file - **url**: 1 file ## Support (packages/gatsby-source-drupal) ### Other - **agentkeepalive**: 1 file - **got**: 1 file - **Lodash**: 1 file - **SemVer**: 1 file ## Support (packages/gatsby-source-shopify) ### Testing - **msw**: 1 file ### Other - **node-fetch**: 3 files ## Frontend (packages/gatsby-source-wordpress) ### The base - **[React](https://seerepo.com/uses/react)**: 2 files ## Backend (packages/gatsby-source-wordpress) ### The base - **[Express](https://seerepo.com/uses/express)**: 1 file · [in packages/gatsby/package.json](https://github.com/gatsbyjs/gatsby/blob/516700a1dca1e982b6d098ab57230b25e0318a1f/packages/gatsby/package.json) ### Data - **cache-manager**: 1 file ## Support (packages/gatsby-source-wordpress) ### Content - **[Cheerio](https://seerepo.com/uses/cheerio)**: 1 file ### Tools - **Prettier**: 3 files - **rimraf**: 1 file ### Other - **Lodash**: 9 files - **url**: 8 files - **chalk**: 7 files - **fs-extra**: 5 files - **p-queue**: 3 files - **async-retry**: 2 files - **atob**: 2 files - **Axios**: 1 file - **diff**: 1 file - **fast-json-stable-stringify**: 1 file - **filesize**: 1 file - **Immer**: 1 file - **node-fetch**: 1 file - **SemVer**: 1 file ## Support (packages/gatsby-transformer-documentationjs) ### Other - **Lodash**: 1 file ## Frontend (packages/gatsby-transformer-react-docgen) ### The base - **[React](https://seerepo.com/uses/react)**: 4 files ## Support (packages/gatsby-transformer-react-docgen) ### Tools - **Babel**: 1 file - **react-docgen**: 1 file ### Other - **Lodash**: 1 file ## Support (packages/gatsby-transformer-sharp) ### Content - **[sharp](https://seerepo.com/uses/sharp)**: 1 file ## Support (packages/gatsby-worker) ### Testing - **jest-extended**: 1 file ### Other - **fs-extra**: 2 files - **signal-exit**: 1 file ## Frontend (packages/gatsby) ### The base - **[React](https://seerepo.com/uses/react)**: 39 files ### Styles - **Autoprefixer**: 1 file - **[PostCSS](https://seerepo.com/uses/postcss)**: 1 file - **postcss-flexbugs-fixes**: 1 file ### Interface - **prompts**: 2 files ## Backend (packages/gatsby) ### The base - **[Express](https://seerepo.com/uses/express)**: 13 files · [in packages/gatsby/package.json](https://github.com/gatsbyjs/gatsby/blob/516700a1dca1e982b6d098ab57230b25e0318a1f/packages/gatsby/package.json) - **graphql-http**: 1 file ### Data - **cache-manager**: 1 file ## Support (packages/gatsby) ### The base - **@gatsbyjs/reach-router**: 12 files - **react-server-dom-webpack**: 1 file ### Content - **@mdx-js/react**: 2 files - **[sharp](https://seerepo.com/uses/sharp)**: 1 file ### Validation - **[prop-types](https://seerepo.com/uses/prop-types)**: 6 files - **joi**: 1 file ### Testing - **Testing Library**: 4 files - **jest-extended**: 2 files - **xhr-mock**: 2 files ### Tools - **Webpack**: 24 files - **Babel**: 14 files - **ESLint**: 4 files - **glob**: 4 files - **enhanced-resolve**: 3 files - **chokidar**: 2 files - **react-dev-utils**: 2 files - **@graphql-tools/load**: 1 file - **@jridgewell/trace-mapping**: 1 file - **@pmmmwh/react-refresh-webpack-plugin**: 1 file - **acorn-loose**: 1 file - **acorn-walk**: 1 file - **babel-loader**: 1 file - **browserslist**: 1 file - **css-minimizer-webpack-plugin**: 1 file - **eslint-webpack-plugin**: 1 file - **globby**: 1 file - **graphql-codegen**: 1 file - **mini-css-extract-plugin**: 1 file - **resolve-from**: 1 file - **terser**: 1 file - **terser-webpack-plugin**: 1 file - **webpack-dev-middleware**: 1 file - **webpack-merge**: 1 file - **webpack-virtual-modules**: 1 file ### Other - **Lodash**: 51 files - **fs-extra**: 49 files - **GraphQL**: 32 files - **Redux**: 17 files - **chalk**: 6 files - **common-tags**: 5 files - **url**: 5 files - **fastq**: 4 files - **bluebird**: 3 files - **execa**: 3 files - **redux-thunk**: 3 files - **SemVer**: 3 files - **compression**: 2 files - **debug**: 2 files - **fastest-levenshtein**: 2 files - **moment**: 2 files - **stack-trace**: 2 files - **anser**: 1 file - **Axios**: 1 file - **cors**: 1 file - **css.escape**: 1 file - **date-fns**: 1 file - **detect-port**: 1 file - **error-stack-parser**: 1 file - **got**: 1 file - **micromatch**: 1 file - **mime**: 1 file - **mitt**: 1 file - **node-fetch**: 1 file - **parseurl**: 1 file - **path-to-regexp**: 1 file - **platform**: 1 file - **react-helmet**: 1 file - **signal-exit**: 1 file - **slugify**: 1 file - **Socket.io**: 1 file - **socket.io-client**: 1 file - **string-similarity**: 1 file - **strip-ansi**: 1 file - **tmp**: 1 file - **uuid**: 1 file ## Frontend (packages/gatsby/src/internal-plugins/dev-404-page) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Support (packages/gatsby/src/internal-plugins/dev-404-page) ### Validation - **[prop-types](https://seerepo.com/uses/prop-types)**: 1 file ### Other - **query-string**: 1 file ## Backend (packages/gatsby/src/internal-plugins/functions) ### The base - **[Express](https://seerepo.com/uses/express)**: 1 file · [in packages/gatsby/package.json](https://github.com/gatsbyjs/gatsby/blob/516700a1dca1e982b6d098ab57230b25e0318a1f/packages/gatsby/package.json) ## Support (packages/gatsby/src/internal-plugins/functions) ### The base - **@gatsbyjs/reach-router**: 1 file ### Validation - **joi**: 1 file ### Tools - **Webpack**: 2 files - **chokidar**: 1 file - **glob**: 1 file - **react-dev-utils**: 1 file ### Other - **.ENV**: 1 file - **cookie**: 1 file - **fs-extra**: 1 file - **Lodash**: 1 file - **multer**: 1 file ## Frontend (packages/gatsby/src/internal-plugins/partytown) ### The base - **[React](https://seerepo.com/uses/react)**: 1 file ## Backend (packages/gatsby/src/internal-plugins/partytown) ### The base - **[Express](https://seerepo.com/uses/express)**: 1 file · [in packages/gatsby/package.json](https://github.com/gatsbyjs/gatsby/blob/516700a1dca1e982b6d098ab57230b25e0318a1f/packages/gatsby/package.json) ## Support (packages/gatsby/src/internal-plugins/partytown) ### Other - **express-http-proxy**: 1 file ## Backend (peril) ### Services - **[GitHub](https://seerepo.com/uses/github)**: 1 file · [peril/rules/merge-on-green.ts, line 2](https://github.com/gatsbyjs/gatsby/blob/516700a1dca1e982b6d098ab57230b25e0318a1f/peril/rules/merge-on-green.ts#L2) ## Support (peril) ### Tools - **danger**: 6 files ## Other repos with a similar stack - [meta/docusaurus](https://seerepo.com/r/meta/docusaurus/built): React, prism-react-renderer, unist-util-visit, @mdx-js/react, remark-mdx, unified, joi, prompts, vfile, mdast-util-mdx, sharp, Cheerio, PostCSS · [Compare](https://seerepo.com/compare/gatsbyjs/gatsby/vs/meta/docusaurus) - [supabase/supabase](https://seerepo.com/r/supabase/supabase/built): React, prism-react-renderer, react-error-boundary, react-markdown, unist-util-visit, remark-parse, unified, vfile, gray-matter, Cheerio · [Compare](https://seerepo.com/compare/gatsbyjs/gatsby/vs/supabase/supabase) - [vercel/next.js](https://seerepo.com/r/vercel/next.js/built): React, Express, react-server-dom-webpack, prop-types, prompts, sharp, styled-jsx, Cheerio, PostCSS · [Compare](https://seerepo.com/compare/gatsbyjs/gatsby/vs/vercel/next.js) - [withastro/astro](https://seerepo.com/r/withastro/astro/built): React, Express, unist-util-visit, remark-parse, unified, vfile, mdast-util-mdx, sharp, Cheerio · [Compare](https://seerepo.com/compare/gatsbyjs/gatsby/vs/withastro/astro) - [TryGhost/Ghost](https://seerepo.com/r/TryGhost/Ghost/built): React, Express, cache-manager, react-error-boundary, prop-types, file-type, rss, sharp, Cheerio · [Compare](https://seerepo.com/compare/gatsbyjs/gatsby/vs/TryGhost/Ghost) - [strapi/strapi](https://seerepo.com/r/strapi/strapi/built): React, react-markdown, prop-types, boxen, prompts, file-type, sharp, styled-components · [Compare](https://seerepo.com/compare/gatsbyjs/gatsby/vs/strapi/strapi) ## Frequently asked questions ### What language is gatsby written in? gatsby is written in JavaScript, with 344,142 written lines. ### What framework does gatsby use? gatsby is built with React, Express, express-graphql, react-reconciler, @gatsbyjs/reach-router, history, graphql-http, and react-server-dom-webpack. ### What services does gatsby use? gatsby connects to GitHub and uses cache-manager. The proof: [peril/rules/merge-on-green.ts, line 2](https://github.com/gatsbyjs/gatsby/blob/516700a1dca1e982b6d098ab57230b25e0318a1f/peril/rules/merge-on-green.ts#L2) ### Does gatsby have tests? Yes. gatsby has 1,688 test files and is tested with Testing Library, msw, Jest, memfs, nock, jest-extended, and xhr-mock. ### Which repos have a stack like gatsby's? The ones that share most of its stack: meta/docusaurus, supabase/supabase, and vercel/next.js. ## What is your repo built with? Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.