Best Open Source Tools by Tag in 2026

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Coroot

stars 8Kforks 408

Instant observability with no-code setup.

Monitoring Self Hosted DevOps Tools+3

Galae Email

stars 7forks 2

Self-hosted email server stack forked from Mailcow

Email Self Hosted Docker Management+3

Nexion

stars 17forks 1

Web3 SSH manager that replaces passwords with crypto keys

Web3 Security Authentication+4

Billing SDK

stars 508forks 161

Open source React components for SaaS billing flows

Developer Tools UI/UX Design API Development Tools+2

Puck

stars 13.5Kforks 995

Open source drag-and-drop page editor for any React app

No Code Developer Tools UI/UX Design+2

ChartDB

stars 23Kforks 1.5K

Free open source database diagram editor and visualizer

Database Data Visualization Developer Tools+1

GPT-Burger

stars 9forks 2

Tag, sort, and organize ChatGPT conversations in Chrome

Knowledge Management Note-taking Apps LLM+1

Well

stars 346forks 50

Retrieve invoices from email automatically, self-hosted and free

Workflow Automation AI Agents Self Hosted+1

Twenty

stars 58.3Kforks 9.5K

Open source CRM with custom data models and AI-native workflows

CRM Self Hosted Workflow Automation+3

Jan

stars 44.9Kforks 3.1K

Run open source LLMs on your own hardware with no cloud required

LLM Self Hosted LLMOps+3

Hyprnote

stars 9.5Kforks 794

Local-first AI meeting notetaker with transcription

Note-taking Apps AI Agents LLM+4

Ghost

stars 55.5Kforks 12K

Launch a newsletter or paid membership site on your own server

CMS Headless CMS Self Hosted+2

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