No moat. Still in business.

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Free self-hosted wiki that lets a team organise its documentation into shelves, books and pages.

Since 2022

Free · Notes and knowledge

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A Slack assistant that learns your company policies and answers staff questions, and helps onboard new hires.

Notes and knowledge

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Keeps documentation in GitHub repos in step with the code and shares that context with teammates and AI coding agents.

Since 2026

Free plan · Developer tools · Developers

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Write product documentation and user manuals in Markdown and publish them as a website, PDF or eBook.

Free plan · Website builders · Software companies

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Saves what you work out in AI chats as searchable documents that Claude, ChatGPT, Cursor and other MCP tools can read later.

Free plan · Notes and knowledge · Developers

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A wiki for SOPs, manuals and FAQs that sits in Microsoft Teams and answers staff questions from your own pages.

Since 2020

Subscription · Notes and knowledge

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Q&A site and knowledge base that teams can host themselves to collect answers to common questions.

Free · Customer support

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WordPress plugin for building a help center knowledge base, using AI to draft docs and answer visitor questions.

Free plan · Customer support · Software companies

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Shared docs workspace where people and AI agents write together, with branches and reviewable edits.

Free plan · Notes and knowledge · Developers

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Saves videos, podcasts, PDFs and articles, summarises them, and lets you search and chat across what you saved.

Since 2022

Free plan · Notes and knowledge · Individuals and families

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A self-hosted forum with a shared library for clubs and communities who want discussions and know-how to stay findable.

Free · Communities and memberships

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A free markdown notes app you run on your own server, with wikilinks, a graph view, diagrams, math and an MCP link for AI tools.

Free · Notes and knowledge · Individuals and families

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WordPress plugin for writing and organising product docs, wikis and help centres, with search and an AI chatbot.

Free plan · Customer support

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A free knowledge base you run on your own server to publish help articles sorted into nested categories.

Free · Customer support

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Open-source wiki software you host yourself so a team can write and share its internal documentation.

Free · Notes and knowledge

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Self-hosted docs and wiki software with templates, approval steps and read analytics for company know-how.

Free plan · Notes and knowledge

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Markdown document editor where teams and AI agents like Claude and ChatGPT write together live, with presentations and blog publishing.

Free plan · Documents and e-signature · Developers

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Drop in papers, notes and transcripts and an AI agent files them into a cited, linked markdown wiki you keep.

Notes and knowledge · Individuals and families

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Reads your code repository and builds reviewed documentation for your team, customers and coding agents over MCP.

Free trial · Developer tools · Developers

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Shared space where teams write docs and move the same pages across boards to track project status.

Free plan · Projects and tasks

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A company wiki where teams write, organise and search shared docs and policies, with search across linked tools.

Since 2020

Free plan · Notes and knowledge

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A self-hosted knowledge base that serves Markdown files as searchable, editable docs for teams.

Free · Notes and knowledge

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A hosted wiki that Claude, ChatGPT, Cursor and other AI agents share through MCP, so people can see and edit what the agents know.

Free plan · Developer tools · Developers

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Searches your company's Slack, Drive, GitHub and other tools by permission and answers questions with links to the source.

Notes and knowledge

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An open-source wiki where organisations keep and structure team knowledge, hosted or on their own servers.

Free plan · Notes and knowledge

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A fast shared wiki where teams keep documents, notes and project boards together.

Since 2016

Projects and tasks

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Collect links, screenshots, notes and files on a visual board, connect them with tags, and ask AI questions about them.

Since 2025

Free plan · Notes and knowledge · Individuals and families

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Store your team's docs and context once and make them available inside Claude, ChatGPT and other AI tools over MCP.

Subscription · Notes and knowledge

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An open-source app for building a personal knowledge base of linked notes, used offline or synced to your own server.

Free · Notes and knowledge · Individuals and families

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A Mac notes app for keeping Markdown documents, driven by the keyboard, with fuzzy search and version history.

Notes and knowledge · Individuals and families

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Simple hosted wikis where teams or individuals write and share docs, public or private, with their own branding.

Since 2014

Free plan · Notes and knowledge

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Keeps one approved store of company knowledge that every AI tool a team uses reads from, with a log of each read.

Free plan · Notes and knowledge

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A team wiki for company knowledge that you can run on your own servers, with spaces, permissions and diagrams.

Notes and knowledge

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A shared wiki for teams to write and search internal docs, specs and meeting notes, with Slack search and AI answers.

Subscription · Notes and knowledge

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A shared knowledge base for teams that flags stale docs and keeps company answers current for people and AI agents.

Since 2025

Free plan · Notes and knowledge

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Task and project tracking for teams with Gantt timelines, Kanban boards and a shared Markdown wiki.

Since 2024

Free plan · Projects and tasks

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Personal notebook that lives in one web page or a small server, linking short notes together however you like.

Free · Notes and knowledge · Individuals and families

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A light, multilingual wiki you install yourself so teams or schools can write and share documentation together.

Free · Notes and knowledge

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WordPress plugin for building a wiki, help centre or team knowledge base with frontend editing and access control.

Free trial · Customer support