Docs and content

All 31

Alphabetical. Checked on 2026-09-04; anything that did not answer says so.

• Apidog
  API design, mocking, testing and documentation in one desktop tool, generated from requests you have already made.
  The four API tools, collapsed into one.
• Bump.sh
  Publishes API documentation from OpenAPI, with change detection between versions and MCP servers generated alongside.
  Treats a spec change as an event worth announcing.
• Contentful
  A headless CMS built for many channels at once, now positioning content as something agents consume as well as browsers.
  Content as an API, from before that was obvious.
• DatoCMS
  A headless CMS with a strong editorial interface and a GraphQL API built for performance budgets.
  Built for the editor as much as the developer.
• DeveloperHub
  Hosted documentation for product docs, knowledge bases and API reference.
  Documentation hosting without building a site.
• DiagramGPT (Eraser)
  Generates architecture and sequence diagrams from a text description, from the Eraser team.
  Diagrams without opening a drawing tool.
• Docusaurus
  Meta's React documentation site generator, with versioning and search built in.
  The default for open-source docs, largely by being there first.
• DocuWriter.ai
  Generates structured documentation for a whole codebase from the repository itself.
  Documents what is there, not what was intended.
• Fern
  Generates SDKs and documentation from an API specification, so client libraries are output rather than maintenance.
  The SDK stops being a repository somebody owns.
• Ghost
  Open-source publishing with newsletters and paid subscriptions built in, run by a non-profit foundation.
  The blog that comes with a business model.
• GitBook
  A documentation platform with docs-as-code support that also answers user questions and reports what is missing.
  Reports the gaps as well as hosting the pages.
• GitBook AI the page returns 404
  GitBook's AI features, listed as a separate product. That page now returns 404.
  Folded into the main product.
• GPTutor
  A VS Code extension that explains code rather than writing it, aimed at reading unfamiliar sources.
  Explains instead of generating, which is rarer.
• Lingo.dev
  Localisation engines that hold glossaries, brand voice and per-locale model choices, callable from code or CI.
  Translation memory, rebuilt around models.
• Localazy
  Translation automation that keeps context and leaves final quality decisions with people.
  Automates the drafting, not the sign-off.
• Locize
  Continuous localisation from the authors of i18next, keeping translation in step with the code that uses it.
  Built by the people who wrote the library underneath it.
• Logseq
  Open-source outliner storing notes as plain files on your disk, with a graph built over them.
  Your notes stay files, which is the whole point.
• Mintlify
  Documentation hosting that keeps pages in step with the codebase, now aimed as much at agents reading docs as at people.
  Docs as a retrieval surface, not a website.
• Notion
  Documents, databases and wikis in one workspace, now with agents that act on the contents.
  Replaced four tools by being adequate at all of them.
• Obsidian
  A local-first notes application over plain Markdown files, with linking and a plugin ecosystem.
  Files on disk, which is why people trust it.
• ReadMe
  Hosted API reference documentation with a console readers can call endpoints from.
  Documentation you can send a request from.
• README-AI
  Generates a README from a repository, covering the projects that never got one.
  Writes the file everyone skips.
• Repowise
  Codebase intelligence: health scores, generated documentation, dead code detection and architectural history.
  Reports on the codebase rather than editing it.
• Sanity
  A headless CMS that treats content as structured data with a query language, rather than as documents.
  Content as a queryable dataset.
• Slab
  A team knowledge base built for readability, with integrations into the tools the content refers to.
  Optimised for the person reading it later.
• Speakeasy
  Began with SDK generation from API specifications, now positioned around governing agents and MCP servers.
  Moved from SDKs to the agent control plane.
• SwarmVault
  A local-first knowledge graph and retrieval store for agent memory, built on a published pattern.
  Memory that stays on the machine.
• Swimm
  Documentation coupled to the code it describes, so a change that invalidates a document is caught in CI. Now aimed at legacy modernisation.
  Fails the build when the docs go stale.
• Theneo.io
  API documentation built for people and agents together, with private portals, changelogs and MCP output.
  Publishes for the agent as well as the reader.
• Tolgee
  Open-source localisation with in-app translation, so strings are edited where they appear.
  Translate in place, not in a spreadsheet.
• xyd
  An open-source documentation framework with themes, OpenAPI and GraphQL support and a plugin system.
  Docs framework with no configuration ceremony.

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