Open-source alternatives to Notion

Next-gen knowledge base that brings planning, sorting and creating all together. Privacy first, customizable and ready to use (alternative to Notion and Miro).

MIT, AGPL-3.0 · released 2026-09-06

Knowledge base that works with a SQLite db file.

MIT · released 2026-08-30

Note taking application with markdown editor and encryption support for mobile and desktop platforms. Runs client-side and syncs through a self hosted Nextcloud instance or similar (alternative to Evernote).

MIT · released 2026-09-06

A privacy-first personal knowledge management software, written in typescript and golang.

AGPL-3.0 · released 2026-09-07

Extensible wiki for your team.

BUSL-1.1 · released 2026-09-02

Cross-platform hierarchical note taking application with focus on building large personal knowledge bases (fork of Trilium Notes).

AGPL-3.0 · released 2026-08-19

Modern, lightweight and powerful wiki app using Git and Markdown.

AGPL-3.0 · released 2026-09-07

Collaborative wiki and documentation software (alternative to Confluence, Notion).

AGPL-3.0 · released 2026-07-03

Web-based collaborative LaTeX editor.

AGPL-3.0 · released 2015-02-26

Collaborative note taking, wiki and documentation platform that scales.

MIT · released 2026-09-04

A personal note tool with AI features.

AGPL-3.0 · released 2026-06-20

Reusable non-linear personal web notebook.

BSD-3-Clause · released 2026-07-10

Diagram software for making flowcharts, process diagrams, org charts, UML, ER and network diagrams.

Apache-2.0 · released 2026-09-06

Realtime collaborative markdown notes on all platforms, formerly known as CodiMD and HackMD CE.

AGPL-3.0 · released 2026-08-21

Simple and private notes app. Protect your privacy while getting more done. That's Standard Notes.

GPL-3.0 · released 2026-09-07

Note-taking application optimized for people with a hacker mindset.

MIT · released 2026-07-28

Realtime collaborative notebook app based on Markdown that supports running Elixir code snippets, TeX and Mermaid Diagrams. Easily deployed using Docker or Elixir.

Apache-2.0 · released 2024-10-25

Easy to use, lightweight, standards-compliant wiki engine with a simple syntax allowing reading the data outside the wiki. All data is stored in plain text files, therefore no database is required.

GPL-2.0 · released 2026-09-02

Database-less note-taking web app that utilises a flat folder of markdown files for storage.

MIT · released 2026-08-29

Knowledgebase platform that uses static Markdown files.

MIT · released 2026-03-11

Tool for indexing large amounts of both documents (PDF, Word, HTML) and structured (CSV, XLS, SQL) data for easy browsing and search. It is built with investigative reporting as a primary use case.

MIT · released 2025-10-27

Modern Docs + Wiki software with built-in workflow, single binary executable, just bring MySQL/Percona.

AGPL-3.0 · released 2025-09-19

Wiki program that stores pages and uploaded files in a git repository, which can then be modified using the VCS command line tools or the wiki's web interface.

GPL-2.0 · released unknown

Graphical text editor used to maintain a collection of wiki pages. Each page can contain links to other pages, simple formatting and images.

GPL-2.0 · released unknown

Lightweight but powerful alternative for managing your personal, file based, notes and checklists.

AGPL-3.0 · released 2026-09-05

Wiki system with complex functionality for simple integration and a superb interface. Store your knowledge with style: Use django models.

GPL-3.0 · released 2026-07-31

Knowledge graph database with documents (similar to Notion), tables, search, and a powerful linked data API. Lightweight, very fast and no runtime dependencies.

MIT · released 2026-09-04

Simple, easy to use wiki software using markdown.

MIT · released 2026-08-29

Second generation wiki that allows the user to extend its functionalities with a powerful extension-based architecture.

LGPL-2.1 · released 2026-08-31

File sharing + sync, notes, and photos (alternative to Nextcloud and ownCloud's RSS reader).

AGPL-3.0 · released 2026-08-13

Lightweight distraction-free text editor, in the browser (Markdown and LaTeX supported). No lag when writing.

MIT · released unknown

A fast wiki for people who think in folders, not feeds. Fast editing. Tree navigation. Markdown on disk.

MIT · released 2026-08-16

Markdown note-taking web application designed for simplicity.

MIT · released 2026-09-01

Minimal web-based Markdown notes app.

AGPL-3.0 · released 2026-09-01

A modern, feature-rich, databaseless flat-file wiki platform.

GPL-3.0 · released 2026-09-06

A databaseless markdown flat-file wiki engine.

MIT · released 2026-08-19

Encrypted diary Web application to save your personal memories of each day. Includes a search function and encrypted file upload.

MIT · released unknown

Host and create your own mindmaps. Share your mindmap sessions with your team and collaborate live on mindmaps.

MIT · released 2026-09-06

Modern note taking application for the cloud, utilizing the best features of progressive web apps technology.

GPL-3.0 · released 2026-09-07

Amusewiki is based on the Emacs Muse markup, remaining mostly compatible with the original implementation. It can work as a read-only site, as a moderated wiki, or as a fully open wiki or even as a private site.

GPL-1.0 · released unknown

Markdown notes taking app with live preview, document encryption, multi-user support, multi-organization capabilities and more.

AGPL-3.0 · released 2026-08-11

Wiki CMS Groupware with the most built-in features.

LGPL-2.1 · released unknown

Web-based knowledge base solution. A simple web app, it runs on pretty much any web server or hosting provider with PHP and MySQL.

GPL-3.0 · released 2025-12-29

Lightweight, mutli-user, flat-file-database Wiki engine. Create pages quickly and edit them in your Web browser using Mardown/HTML/CSS/JS. The main difference with other wiki is that you are encouraged to customize each page style individually.

AGPL-3.0 · released 2026-06-09

WackoWiki is a light and easy to install multilingual Wiki-engine.

BSD-3-Clause · released 2026-07-18

Structured personal knowledge base, inspired by zettlekasten and org-mode.

AGPL-3.0 · released unknown

Organize and store information. Stores documentation in a book like fashion.

MIT · released unknown

Create simple mindmaps (documentation in French).

AGPL-3.0 · released unknown

A lightning fast and infinitely extensible tool for creating personal non-linear notebooks, databases, and wikis that is entirely self-contained, runs in your browser, and is only 58 kilobytes in size.

AGPL-3.0 · released unknown

Wiki software package that powers Wikipedia and all other Wikimedia projects, serving hundreds of millions of users each month.

GPL-2.0 · released unknown

Wiki-based system for collaborative creation and maintenance of websites.

GPL-3.0 · released unknown

Online assessment software. From a quick quiz on your phone to large scale, high stakes, proctored desktop testing, easy, secure and economical.

GPL-2.0 · released unknown

Totally private personal database and note taking app.

GPL-3.0 · released unknown

Wiki, simple to use and install.

GPL-2.0 · released unknown

Manage your knowledge in documents with folders, markdown, full text search and webpage collection support.

⊘ Proprietary · released unknown