Best Self-Hosted Open Source Software

Rocket.Chat

Self-hosted, open-source team chat platform in TypeScript with end-to-end encryption, voice calls, federation, and a custom app framework.

Alternative to:

Microsoft Teams

Stars45.9K

Forks13.8K

Last commit3 hours ago

SiYuan

SiYuan is a self-hosted, block-based note-taking app with two-way references, a Markdown WYSIWYG editor, and flashcard review built in.

Alternative to:

Notion

Stars45.5K

Forks2.9K

Last commit3 hours ago

Logseq

Logseq is an open-source outliner for notes and tasks, storing data as local Markdown or Org-mode files with backlinks and a plugin API.

Alternative to:

Notion

Stars44.1K

Forks2.7K

Last commit5 hours ago

Paperless-ngx

Paperless-ngx is a self-hosted document management system that indexes scanned documents so you can search and archive paperwork.

Alternative to:

DocuWare

Stars43.7K

Forks3K

Last commit4 hours ago

Outline

Self-hostable team wiki and knowledge base with a collaborative editor, built on React and Node.js, also available as a hosted service.

Alternative to:

Confluence

Stars39.9K

Forks3.5K

Last commit3 hours ago

Mattermost

Open core, self-hosted collaboration platform offering chat, workflow automation, voice calling, screen sharing, and AI integration.

Alternative to:

Microsoft Teams

Stars38.6K

Forks8.9K

Last commit5 hours ago

Trilium

Free, open-source note-taking application with a hierarchical tree structure, built for large personal knowledge bases, with sync and encryption.

Alternative to:

Evernote

Stars37.1K

Forks2.5K

Last commit5 hours ago

Nextcloud

Self-hosted server for storing, syncing, and sharing files, contacts, and calendars, extendable with hundreds of apps from an official app store.

Alternative to:

Dropbox

Stars36.3K

Forks5.1K

Last commit3 hours ago

Authelia

An authentication and authorization server that adds 2FA and SSO to apps behind nginx, Traefik, Caddy, or another reverse proxy via a web portal.

Alternative to:

Auth0

Stars28.4K

Forks1.4K

Last commit10 hours ago

ente

An end-to-end encrypted platform with apps for encrypted photo backup, two-factor codes, and document storage, self-hostable from this monorepo.

Alternative to:

Authy

Stars28K

Forks1.7K

Last commit3 hours ago

Element

A Matrix web and desktop chat client built on the Matrix JS SDK, available hosted, self-hosted, or as an Electron desktop app.

Alternative to:

Microsoft Teams

Stars13.3K

Forks2.7K

Last commit6 hours ago

Best Self-Hosted Open Source Software

Self-hosted, open-source software you can run on your own server for full control and privacy—ranked by GitHub stars, activity, and license.