MDMD: opens and saves, partial fidelity. Documents import and export one page at a time; Notion exports import as Markdown
HTMLHTML: saves only, partial fidelity. Export only
CSVCSV: opens and saves, full fidelity. Databases import and export as CSV
Imports Notion ZIP exports, Markdown and CSV. The free cloud plan has one member; teams use a paid plan or self-host. Free version: Free Personal cloud plan with one member, 100 MB storage and 7 MB uploads. Local use and self-hosting are free.
Best for docs and whiteboards in one local-first app
License: Open source
Windows
macOS
Linux
Web
iOS
Android
Self-hosted
Status: Unknown
MDMD: opens and saves, partial fidelity. Page text and basic blocks round trip; databases do not
HTMLHTML: opens and saves, partial fidelity. Page text and basic blocks round trip; databases do not
The editor is MIT-licensed. The self-host server is source-available and free up to 10 seats per workspace. Free version: Unlimited local workspaces. Free cloud workspaces have 10 GB, 3 members and 7-day history. Self-hosting is free up to 10 seats.
Source-available license, free for non-commercial use. Imports Notion through its API or Markdown and CSV exports; some formulas and mentions become plain values. Free version: Free plan: 100 MB of remote storage and 10 shared channels. Paid memberships add storage and an ANY ID.
AppFlowy, Databases with table, board and calendar views: Grid, board and calendar views, with fewer database features than Notion
AFFiNE, Databases with table, board and calendar views: Database blocks inside docs, lighter than Notion's databases
Anytype, Databases with table, board and calendar views: Sets and collections with several view types, built on a different object model
Obsidian, Databases with table, board and calendar views: The Bases core plugin shows notes as filtered tables and cards; it is not a full database
Logseq, Databases with table, board and calendar views: Queries and property tables; the database version is in beta
Anytype, Nested pages and a block editor: Pages are objects built from blocks, with types and relations
Obsidian, Nested pages and a block editor: Markdown notes in folders with links; no nested block pages
Logseq, Nested pages and a block editor: Block outliner with linked pages; no free-form page layout
AppFlowy, Real-time collaboration and sharing: The free cloud plan has one member; teams need a paid plan or a self-hosted server
AFFiNE, Real-time collaboration and sharing: Free cloud workspaces allow 3 members; self-hosting is free up to 10 seats per workspace
Anytype, Real-time collaboration and sharing: Free plan: 10 shared channels and 100 MB of remote storage
Obsidian, Real-time collaboration and sharing: Shared vaults need the paid Obsidian Sync add-on
Logseq, Real-time collaboration and sharing: The free app has no built-in real-time co-editing
AppFlowy, Publish pages to the web: Publishing needs AppFlowy Cloud or a self-hosted server
AFFiNE, Publish pages to the web: Sharing a read-only public link works through AFFiNE Cloud or a self-hosted server
Anytype, Publish pages to the web: Web publishing needs an ANY ID, which comes with a paid membership
Obsidian, Publish pages to the web: Obsidian Publish is a paid add-on
Logseq, Publish pages to the web: Public pages can be exported as a static site you host yourself
AppFlowy, Mobile apps and offline access: iOS and Android apps exist; syncing devices needs an account
AFFiNE, Mobile apps and offline access: Local-first desktop app; mobile apps are newer
Obsidian, Mobile apps and offline access: iOS and Android apps keep notes as local files
Logseq, Mobile apps and offline access: Mobile apps exist; the iOS app for version 2.0 is in TestFlight beta
AppFlowy, Built-in AI assistant: AI features are a limited trial on the free plan; local models run through Ollama
AFFiNE, Built-in AI assistant: AFFiNE AI is a paid add-on
Anytype, Built-in AI assistant: No AI assistant is listed for the free plan
Obsidian, Built-in AI assistant: No built-in AI; community plugins connect to outside services
Logseq, Built-in AI assistant: No built-in AI assistant
Not covered by any free alternative yet: Databases with table, board and calendar views, Real-time collaboration and sharing, Publish pages to the web, Built-in AI assistant. See all feature gaps