Best Self Hosted Open Source Tools in 2026

Open Source Alternatives

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Open Source Alternatives

AppFlowy

stars 76.5Kforks 6K

Open source Notion alternative with AI, self-hosted

Project Management Knowledge Management Note-taking Apps+5

Joplin

stars 56.3Kforks 6.3K

Open source note-taking app with Markdown and sync support

Note-taking Apps Knowledge Management File Sync & Storage+3

Pixelfed

stars 7.1Kforks 880

Fediverse photo sharing: no central platform, fully user-owned

Social Media Self Hosted Open Core+4

Docmost

stars 21.6Kforks 1.6K

Self-hosted collaborative wiki and documentation tool

Documentation Knowledge Base Knowledge Management+3

Logseq

stars 44.9Kforks 2.8K

Privacy-first knowledge base with outliner and graph view

Knowledge Management Note-taking Apps Knowledge Base+5

Capgo

stars 847forks 157

Over-the-air live updates for Capacitor mobile apps

Developer Tools Workflow Automation CI/CD Platforms+4

Prisme Analytics

stars 131forks 4

Privacy-first open source web analytics with no cookies

Web Analytics Data Visualization Privacy Tools+3

Flipt

stars 4.9Kforks 306

Feature flags that store and evaluate on your own infrastructure

Feature Flag Self Hosted Cloud Native+5

Cerbos

stars 4.6Kforks 212

Move access control out of app code into testable YAML policies

Authorization Security Developer Tools+4

Grit

stars 4.6Kforks 126

Automate code migrations at scale using a pattern-matching DSL

Developer Tools Workflow Automation Coding+4

Azimutt

stars 2.2Kforks 141

Explore and document complex database schemas visually

Database Data Visualization Documentation+4

Jellyfin

stars 56.9Kforks 5.5K

Free open source media server for movies, TV, and music

Self Hosted Video File Sync & Storage+3