Open-source alternatives to Notion

5 alternatives, ranked by a published maintenance score computed from live GitHub signals (fetched 2026-09-04). We flag unmaintained projects on both sides — including Notion itself when the data says so.

About Notion: Proprietary SaaS; your workspace lives on Notion's servers and offline support is limited. It is closed-source, so the same public maintenance signals do not exist for it — we score only the alternatives below.

The alternatives

AppFlowy

90 /100 actively maintained

Notion-style workspace you own: documents, databases, kanban.

76,257 stars · last commit 2026-09-01 · latest release 0.14.1 (2026-09-03) · 1,015 open issues/PRs · AGPL-3.0 · fetched 2026-09-04

How this 90/100 was computed

Last commit	3 days ago	40/40
Latest release	yesterday	25/25
Community size	GitHub stars	15/15
Open-issue trend	not enough history yet — needs snapshots 21+ days apart; neutral 10/20 awarded meanwhile	10/20
Total		90/100

AFFiNE

90 /100 actively maintained

Docs, whiteboards and databases in one local-first workspace.

72,182 stars · last commit 2026-09-04 · latest release v2026.9.3-canary.909 (2026-09-03) · 730 open issues/PRs · custom license · fetched 2026-09-04

How this 90/100 was computed

Last commit	today	40/40
Latest release	yesterday	25/25
Community size	GitHub stars	15/15
Open-issue trend	not enough history yet — needs snapshots 21+ days apart; neutral 10/20 awarded meanwhile	10/20
Total		90/100

Outline

90 /100 actively maintained

Fast team knowledge base with a clean editor.

40,449 stars · last commit 2026-09-04 · latest release v1.10.0 (2026-09-02) · 81 open issues/PRs · custom license · fetched 2026-09-04

How this 90/100 was computed

Last commit	today	40/40
Latest release	2 days ago	25/25
Community size	GitHub stars	15/15
Open-issue trend	not enough history yet — needs snapshots 21+ days apart; neutral 10/20 awarded meanwhile	10/20
Total		90/100

Docmost

90 /100 actively maintained

Self-hosted collaborative wiki and documentation, Notion-like editing.

21,580 stars · last commit 2026-09-03 · latest release v0.95.0 (2026-07-04) · 327 open issues/PRs · AGPL-3.0 · fetched 2026-09-04

How this 90/100 was computed

Last commit	yesterday	40/40
Latest release	2 months ago	25/25
Community size	GitHub stars	15/15
Open-issue trend	not enough history yet — needs snapshots 21+ days apart; neutral 10/20 awarded meanwhile	10/20
Total		90/100

SiYuan

90 /100 actively maintained

Local-first personal knowledge base with block-level references.

46,164 stars · last commit 2026-09-04 · latest release v3.8.3-alpha.1 (2026-09-03) · 33 open issues/PRs · AGPL-3.0 · fetched 2026-09-04

How this 90/100 was computed

Last commit	today	40/40
Latest release	yesterday	25/25
Community size	GitHub stars	15/15
Open-issue trend	not enough history yet — needs snapshots 21+ days apart; neutral 10/20 awarded meanwhile	10/20
Total		90/100