OpenAltFinder

Open Source #markdown Projects

Discover open source software tagged with markdown.

HelixNotes

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.

Alternative to:
ObsidianObsidian
Jotty

Jotty

Self-hosted notes and checklists with markdown files, Kanban task projects, SSO, PGP encryption, and a REST API.

Alternative to:
NotionNotion
memos

memos

Privacy-first, self-hosted note-taking platform with markdown support, tagging, and built-in AI — a lightweight alternative to Notion and Obsidian.

Alternative to:
ObsidianObsidian
AFFiNE

AFFiNE

Open-source knowledge base combining note-taking, whiteboard, and project planning in one workspace.

Alternative to:
NotionNotion
SilverBullet

SilverBullet

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

Alternative to:
NotionNotion
Slidev

Slidev

Markdown-based presentation slides for developers, with code highlighting, Vue components, theming, and PDF/PPTX export.

Alternative to:
Microsoft PowerPointMicrosoft PowerPoint
Alexandrie

Alexandrie

Self-hosted knowledge base with extended Markdown editor, Kanban, OIDC/SSO, PWA and offline support.

Alternative to:
NotionNotion
Mnemo

Mnemo

Mnemo is a free, open-source desktop study app combining block-based notes, FSRS flashcards, and mind maps with no accounts or tracking.

Alternative to:
QuizletQuizlet
Wiki.js

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.

Alternative to:
NotionNotion
OpenKnowledge

OpenKnowledge

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

Alternative to:
NotionNotion
Doska

Doska

Local-first kanban app with Markdown cards, offline support, and an optional self-hosted sync server with SSO and MCP.

Alternative to:
TrelloTrello
Kova

Kova

Open source desktop Markdown presentation editor with live preview, themes, and PPTX export — a self-contained alternative to PowerPoint.

Alternative to:
Microsoft PowerPointMicrosoft PowerPoint
NoteDiscovery

NoteDiscovery

A self-hosted knowledge base for note-taking with markdown support, Zettelkasten methodology, and Docker deployment.

Alternative to:
NotionNotion
HedgeDoc

HedgeDoc

Real-time collaborative markdown note editor you can self-host — write together with rich formatting and seamless sharing.

Alternative to:
Google DocsGoogle Docs
TinaCMS

TinaCMS

A fully open-source headless CMS with Git support, Markdown editing, and live visual preview for React-based sites.

Alternative to:
ContentfulContentful
BookStack

BookStack

Open source wiki and documentation platform with a books/shelves/pages model — a simple, self-hostable alternative to Confluence and Notion.

Alternative to:
NotionNotion
Docmost

Docmost

Open-source collaborative wiki and documentation platform, an alternative to Confluence and Notion.

Alternative to:
ConfluenceConfluence
TriliumNext Notes

TriliumNext Notes

Hierarchical personal knowledge base with powerful note-taking, rich text editing, and scripting capabilities.

Alternative to:
NotionNotion
Scratch

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.

Alternative to:
NotionNotion
Golocron

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.

Alternative to:
WordPressWordPress
kuku

kuku

Open-source local-first Markdown workspace for macOS with wiki, AI editing, and encrypted sync.

Alternative to:
ObsidianObsidian
Pad

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.

Alternative to:
LinearLinear
Many Notes

Many Notes

A Markdown note-taking web application designed for simplicity with vaults, collaboration, and PWA support.

Alternative to:
NotionNotion
Atomic

Atomic

A self-hosted personal knowledge base that turns markdown notes into an AI-augmented knowledge graph with semantic search and wiki synthesis.

Alternative to:
PinboardPinboard
WriteFreely

WriteFreely

Minimalist, federated blogging platform for writers who want a clean, distraction-free space to publish.

Alternative to:
WordPressWordPress