Open Source #markdown Projects
Discover open source software tagged with markdown.

HelixNotes
A fast, privacy-first local markdown note-taking app built with Tauri and SvelteKit. Your notes stay as plain .md files on your device.
ObsidianJotty
Self-hosted notes and checklists with markdown files, Kanban task projects, SSO, PGP encryption, and a REST API.

memos
Privacy-first, self-hosted note-taking platform with markdown support, tagging, and built-in AI — a lightweight alternative to Notion and Obsidian.
ObsidianAFFiNE
Open-source knowledge base combining note-taking, whiteboard, and project planning in one workspace.

SilverBullet
Self-hosted, programmable knowledge base: plain Markdown notes with live queries, backlinks, and an embedded Lua scripting runtime.

Slidev
Markdown-based presentation slides for developers, with code highlighting, Vue components, theming, and PDF/PPTX export.
Microsoft PowerPointAlexandrie
Self-hosted knowledge base with extended Markdown editor, Kanban, OIDC/SSO, PWA and offline support.

Mnemo
Mnemo is a free, open-source desktop study app combining block-based notes, FSRS flashcards, and mind maps with no accounts or tracking.
Quizlet
Wiki.js
Wiki.js is a modern, powerful open-source wiki app built on Node.js. Versioned, searchable, beautiful, and self-hosted — a knowledge base for any team, big or small.

OpenKnowledge
AI-native, local-first markdown editor and LLM wiki with built-in integrations for Claude, Codex, and other agents.

Doska
Local-first kanban app with Markdown cards, offline support, and an optional self-hosted sync server with SSO and MCP.
Trello
Kova
Open source desktop Markdown presentation editor with live preview, themes, and PPTX export — a self-contained alternative to PowerPoint.
Microsoft PowerPoint
NoteDiscovery
A self-hosted knowledge base for note-taking with markdown support, Zettelkasten methodology, and Docker deployment.

HedgeDoc
Real-time collaborative markdown note editor you can self-host — write together with rich formatting and seamless sharing.
Google Docs
TinaCMS
A fully open-source headless CMS with Git support, Markdown editing, and live visual preview for React-based sites.
Contentful
BookStack
Open source wiki and documentation platform with a books/shelves/pages model — a simple, self-hostable alternative to Confluence and Notion.

Docmost
Open-source collaborative wiki and documentation platform, an alternative to Confluence and Notion.
Confluence
TriliumNext Notes
Hierarchical personal knowledge base with powerful note-taking, rich text editing, and scripting capabilities.

Scratch
Scratch is a minimalist, offline-first markdown note-taking app for macOS, Windows, and Linux. Plain text files, keyboard-driven, with no cloud lock-in or account required.

Golocron
Golocron is a plug-and-play blogging and wiki system designed for Go backends. Markdown support, live preview, and a clean UI for quick content sites.
WordPress
kuku
Open-source local-first Markdown workspace for macOS with wiki, AI editing, and encrypted sync.
Obsidian
Pad
Local-first project management for developers and AI agents, with a CLI, web UI, SQLite backend, and native skills for Claude Code, Cursor, Codex, and more.
Linear
Many Notes
A Markdown note-taking web application designed for simplicity with vaults, collaboration, and PWA support.

Atomic
A self-hosted personal knowledge base that turns markdown notes into an AI-augmented knowledge graph with semantic search and wiki synthesis.
Pinboard
WriteFreely
Minimalist, federated blogging platform for writers who want a clean, distraction-free space to publish.
WordPress