What is the best open-source Self-hosted library?

Our top pick is AppFlowy: Notion replacement, Rust + Flutter, self-hostable.

How many Self-hosted open-source libraries are there?

Thousands exist on GitHub, but we've curated the top 12 that actually ship in production. Categorized by use case.

Is this list updated?

Yes — every pick is reviewed weekly. Star counts refresh daily via the GitHub API. Last review: 22 May 2026.

Awesome · 12 curated picks

Awesome Self-hosted

The curated self-hosted stack — replace every SaaS in your life with software you fully own. Privacy-first picks for 2026.

Productivity & docs

AppFlowy

60k

AppFlowy-IO/AppFlowy

Notion replacement, Rust + Flutter, self-hostable.

Logseq

35k

logseq/logseq

Roam-style PKM with markdown files.

Outline

30k

outline/outline

Team wiki + docs, clean markdown editor.

Storage & sync

Nextcloud

28k

nextcloud/server

Dropbox + Google Workspace self-hosted suite.

Syncthing

65k

syncthing/syncthing

P2P file sync, no central server.

Communication

Mattermost

30k

mattermost/mattermost

Slack replacement, used by DoD + regulated orgs.

Rocket.Chat

41k

RocketChat/Rocket.Chat

Team chat + customer support in one tool.

Code & dev

Gitea

47k

go-gitea/gitea

Lightweight self-hosted GitHub clone.

Marketing & analytics

Plausible

22k

plausible/analytics

Privacy-first analytics, GDPR-safe.

Umami

26k

umami-software/umami

Fully OSS Plausible alternative.

PostHog

23k

PostHog/posthog

Full product analytics + session replay.

Listmonk

17k

knadh/listmonk

Self-hosted email marketing, Mailchimp alternative.

Want curator deep-takes on each pick?

Lifetime members get full ~100-word curator takes per repo with "use this if / skip if" clauses, plus 13 ready-to-ship stack bundles. ₹99 once.

See lifetime pricing

More awesome lists