Best Open Source Tools by Tag in 2026

Open Source Alternatives

Alternatives Blog Advertise

Open Source Alternatives

Pencil2D Animation

stars 1.8Kforks 313

Free open source 2D hand-drawn animation tool

Graphic Design Video Open Core+2

Trench

stars 1.7Kforks 64

Open source analytics infrastructure powered by ClickHouse

Web Analytics Database Data Visualization+5

Standard Notes

stars 6.7Kforks 559

End-to-end encrypted notes with 100+ extensions and themes

Note-taking Apps Privacy Tools Security+4

UnInbox

stars 1.8Kforks 127

Open source collaborative email with shared team inboxes

Email Workflow Automation Self Hosted+2

Huly

stars 27.9Kforks 2.2K

One open source workspace to replace Jira, Slack, and Notion

Project Management Chat Knowledge Management+5

Wire

stars 2.8Kforks 332

End-to-end encrypted messaging, voice, and file sharing

Chat File Sharing Video+3

Firefox

stars 13.4Kforks 1.6K

Open source browser from Mozilla with privacy by default

Web Browsers Privacy Tools Security+2

Ghostscript

stars 291forks 90

Open source PDF and PostScript interpreter and converter

Developer Tools Workflow Automation Coding+2

Typesense

stars 26.9Kforks 1K

Fast typo-tolerant search engine with instant results

API Infrastructure Developer Tools AI Search Tools+3

Upscayl

stars 50.4Kforks 2.6K

Free open source AI image upscaler for Mac, Linux, and Windows

Graphic Design Developer Tools Open Core

Falcon LLM

stars 9.4Kforks 795

Apache 2.0-licensed LLM from TII, from 1B to 180B parameters

LLM LLMOps AI SDK+4

RethinkDB

stars 27Kforks 1.9K

Open source distributed document database with real-time feeds

Database Self Hosted API Infrastructure+2

Explore by tags