AppFlowy-IO / AppFlowy

Bring projects, wikis, and teams together with AI. AppFlowy is the AI collaborative workspace where you achieve more without losing control of your data. The leading open source Notion alternative.

toeverything / AFFiNE

There can be more than Notion and Miro. AFFiNE(pronounced [ə‘fain]) is a next-gen knowledge base that brings planning, sorting and creating all together. Privacy first, open-source, customizable and ready to use.

docmost / docmost

Docmost is an open-source collaborative wiki and documentation software. It is an open-source alternative to Confluence and Notion.

AgriciDaniel / claude-obsidian

Self-organizing AI second brain for Obsidian + Claude Code. Drop any source and Claude reads, links, and files it into one connected knowledge graph of plain Markdown you own. AI note-taking, personal knowledge management (PKM), and an open-source Notion alternative. Based on Karpathy's LLM Wiki pattern.

Anil-matcha / awesome-open-source-saas-alternatives

Open source alternatives to paid SaaS apps: Notion, Slack, Auth0, Vercel and more. Curated list with licenses and GitHub stars.

mayneyao / eidos

A single-file relational spreadsheet for you and your agent.

busabase / busabase

Open-source database & workspace for AI agents — structured data, durable knowledge, reusable skills, runnable apps, and human review on the writes that matter. Local-first and self-hostable.

LifetimeLabsDev / PrivacyNotes.app

End-to-end encrypted notes, tasks, files, passwords, journal and bookmarks. Keyed by a 12-word BIP-39 phrase: no email, no password, no account to leak. The full client source for web, desktop and mobile is published, along with the encryption (XChaCha20-Poly1305, HKDF-SHA256, Ed25519) and the threat model, so the privacy claims are falsifiable.

KitionAI / kition

Kition brings Markdown, DataTable, WhiteBoard, a tool-using AI agent, browser research, and visual workflows into one desktop workspace.

oxynote / oxynote

An open‑source technical wiki connected to the systems it describes

saltmd / salt.md

The open-source workspace for people and AI agents. Docs, databases and realtime collaboration with an MCP server in the same binary, so agents work in the same workspace on the same permissions. One Go binary, one SQLite file, self-hosted.

kusule1351-hue / thought-desk

A fast, local-first Notion alternative built with Rust + Tauri. Block editor, nested pages, full-text search, black-and-white UI, ~115 MB RAM.