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Dev tools · alternatives · 2026

24 alternatives to I am building an open-source Confluence and Notion alternative

Hello HN, I am building Docmost, an open-source collaborative wiki and documentation software. It is an open-source alternative to Confluence and Notion. I have been working on it for the past 12 months. This is the first public release (beta). The rich-text editor has support for real-time collaboration, LaTex, inline comments, tables, and callouts to name a few. Features - Collaborative real-time editor - Spaces (Teamspace) - User permissions - Groups - Comments - Page history - Nested pages - Search - File attachments You can find screenshots of the product on the website. Website:…

Docmost is an open-source collaborative wiki and documentation platform designed as an alternative to Confluence and Notion. It features a real-time collaborative rich-text editor with support for LaTeX, inline… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. I am building an open-source Confluence and Notion alternative launched in 2024; newer entries below may have overtaken it.

  1. 1

    Build great docs websites, focus on your content - by Meta

    2022 · docusaurus.io · its alternatives →

  2. 2

    Inspired by the design and UI/UX of apps like Notion, and utility of open-source apps like StackEdit, I decided to create a minimalistic, local-only WYSIWYG Markdown editor. Some features worth highlighting: - Monaco editor and Prettier integration for code snippets - Tables (apparently the holy grail of WYSIWYG editing) - Embeds (for CodePen, CodeSandbox and YouTube, most useful for HTML or JSON exports) - Accepts Markdown paste-in, and "exports"/generates HTML, Markdown and JSON outputs - Collaboration (with real-time awareness and initial commenting system, available only when…

    2023 · editor.vrite.io · its alternatives →

  3. 3

    Easy to maintain open source documentation websites

    2018 · docusaurus.io · its alternatives →

  4. 4

    BookStack is a simple, open-source, self-hosted, easy-to-use platform for organising and storing information.

    2022 · bookstackapp.com · its alternatives →

  5. 5

    Hi HN, Nick here. We’re launching OpenKnowledge (https://openknowledge.ai/), a “what you see is what you get” markdown editor that has direct integrations with Claude, Codex, and other agents. Available as MacOS app or Web UI+CLI. Fully free/local and OSS. We built this because we wanted a Notion-like experience for writing and sharing markdown files across our team. Obsidian is the best alternative we tried, but found it doesn’t have a true WYSWIG UI and it didn’t integrate well with Claude/Codex outside of community plugins. So we built OpenKnowledge. It takes…

    Jun 2026 · github.com · its alternatives →

  6. 6

    Docs, flowcharts, wireframes, and mind maps in one place

    2021 · whimsical.com · its alternatives →

  7. 7

    A web-based collaborative LaTeX editor. Contribute to overleaf/overleaf development by creating an account on GitHub.

    2014 · github.com · its alternatives →

  8. 8IM

    Hi HN, Since 2019, I’ve been working on a writing platform designed for creating complex documents (e.g., theses). I personally use it for everything as it also allows to classify documents in categories so you can organize them efficiently. As of a few months ago, the app is also available in the browser, and you can now invite coworkers to collaborate on a document in real time. The app is somewhat inspired by LyX. It offers an intuitive, modern editor, but users don’t need to know any LaTeX. When it’s time to export, they can choose from a range of templates (IEEE paper, thesis, etc.). A…

    2025 · its alternatives →

  9. 9

    A collaborative UML editor; build with etherpad and plantuml - AlexITC/collabuml

    2023 · github.com · its alternatives →

  10. 10WB

    Kalmia started as a small hobby project about two months ago, but it quickly evolved when we needed a better solution to manage our office's documentation. It has now become our go-to tool for both internal and user-facing docs. Recently, we decided to open source it, as we believe others might benefit from a lightweight, customizable documentation system like this. We're excited to see how the community can take it further, contribute, and adapt it to their own needs!

    2024 · kalmia.difuse.io · its alternatives →

  11. 11

    An expressive and collaborative document editor

    2015 · notion.so · its alternatives →

  12. 12OM

    My hatred for Confluence, Notion et al. has motivated me to explore prototyping a seedling for a collaboration tool that is plaintext-friendly, built on top of Org and is still friendly for non-techies who are familiar with Notion, Google Docs and the likes in terms of usability. The page currently just renders https://gitlab.com/formation.tools/eng/engineering/-/raw/mai... which is effectively the file we use to align on work internally, so we're dogfooding this. Eventually, I would like to be able to just show any git repo and offer collaborative…

    2022 · proto.formation.tools · its alternatives →

  13. 13
    Skilldocs▲192

    I got fed up with Notion, so I built my dream document editor. It's all markdowned so it's easy to view skills or other agent-related documents. It's got the collaboration features I love from Figma (shared cursory and the ability to follow) and Google Docs (comments, realtime editing). Then you can export the diff and comments to an agent. I've been really liking it for talking over skill documents live on a call. I'm curious if this resonates with other people. More generally, I feel like notion is less and less relevant in an age where documents have a very different purpose and Markdown…

    Aug 2026 · skilldocs.dev · its alternatives →

  14. 14

    Open source Slack alternative

    2015 · mattermost.com · its alternatives →

  15. 15

    Built this because I'm sick of keeping documentation up to date when everyone's using AI tools now. It will not only generate missing docs / update / remove docs as they need alignment, but you can hook up the MCP to whatever agent is being used these days and it'll inform it of codebase conventions & relevant documentation, telling it to update docs as it find them or as it makes changes (in the same PR as related work), and reduces spend on tokens by getting things right the first time without having to grep the whole codebase for context or go through 5 rounds of "follow our…

    Jul 2026 · moxiedocs.com · its alternatives →

  16. 16

    We are working on an open-source .docx editor library for apps that need to edit Word documents in the browser. We just shipped 1.0. A lot of existing approaches convert .docx into HTML and lose document semantics along the way. Our editor parses OOXML directly and uses its own rendering+layout engine to produce paged documents with html/css. Edits round-trip back to .docx, so you’re always editing the document, not its representation. The core rendering engine is framework agnostic, with React and Vue ui adapters on top. It’s Apache 2.0. Happy to answer questions.

    May 2026 · github.com · its alternatives →

  17. 17DF
  18. 18

    Documind is an open-source tool that turns documents into structured data using AI. What it does: - Extracts specific data from PDFs based on your custom schema - Returns clean, structured JSON that's ready to use - Works with just a PDF link + your schema definition Just run npm install documind to get started.

    2024 · github.com · its alternatives →

  19. 19EM
  20. 20

    Open source AI-ready documentation platform.

    Mar 2026 · doccupine.com · its alternatives →

  21. 21
    ScienHub▲129

    AI-empowered LaTeX collaboration platform

    2024 · scienhub.com · its alternatives →

  22. 22

    A simple and free DocSend alternative

    2024 · relate.so · its alternatives →

  23. 23

    Create tree charts in seconds to level up your documentation

    2023 · emergence.com.sg · its alternatives →

  24. 24

    In the last few years I've been doing a lot of technical writing, both for my own programming blog and others, and I've noticed there is a lack of good tools for this kind of writing. Whether that was a programming blog post or documentation, I always had to move back an forth between different editors, and sometimes even other apps for content management and the actual content publication. A lot of copy-pasting, and wasted time. Based on this experience I decided to try and build a tool that could provide a good experience for this kind of content from writing to publishing. This (I call it…

    2023 · vrite.io · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →