Directory
MDX
Markdown that renders JSX components
FreeCMS & content infrastructuremdxjs.com
What it is
MDX is a format that lets you write JSX inside Markdown, so an article can embed live React components — charts, interactive figures, embeds — between paragraphs of prose. It compiles to a React component and is supported by Vite, Next.js and Astro.
Why it earns a slot
The reason a technical publication can ship an interactive explainer inside an ordinary article. Every file-based tool here — Tina, Keystatic, Outstatic, Velite — speaks it natively.
Know before you commit
MDX is a compiler, not a CMS: no editor, no media library, no workflow, no roles. Non-technical writers will not author raw MDX, so pair it with an editing layer.
Getting started
npm i @mdx-js/rollup
Neighbourhood
How MDX sits against the rest of the atlas — swaps, companions and the tools builders actually save alongside it.
Also in CMS & content infrastructure
Airtable as a CMS
airtable.comNot yet swept
Spreadsheet database as a content API
Free tier + paidCMS & content infrastructure
Free: 5 editors, 1,000 records/base, 1GB attachments, 1,000 API calls/mo. Team $20/user/mo annual (50k records). Business $45/user/mo (125k records).
Open dossier
Builder.io
builder.ioNot yet swept
Visual page builder with AI codegen
Free tier + paidCMS & content infrastructure
Free: 5 users, 75 AI credits/mo. Pro around $24/user/mo, Team around $40/user/mo (20 users). Extra agent credits $25 per 500. Enterprise custom.
Open dossier
Contentful
contentful.comNot yet swept
Enterprise API-first headless CMS
Free tier + paidCMS & content infrastructure
Free: 10 users, 10k records, 100k API calls/mo, 2 locales, 25 content types. Lite $300/mo (20 users, 1M calls, 3 locales). Enterprise custom.
Open dossier
Directus
directus.comNot yet swept
Data platform over any SQL database
Free tier + paidCMS & content infrastructure
Core free (3 seats, free to self-host). Team $499/mo annual or $599/mo monthly (10 SSO seats); managed Cloud +$99/mo. Enterprise custom.
Open dossier