Best open source Developer Tools projects of 2026

n8n

TYPESCRIPT

Fair-code workflow automation platform

Langflow

★ FEATUREDPYTHON

Visual builder for AI-powered applications

Dify

★ FEATUREDTYPESCRIPT

AI-powered app creation without coding complexities

Excalidraw

★ FEATUREDTYPESCRIPT

Virtual whiteboard for sketching hand-drawn like diagrams

RustDesk

★ FEATUREDRUST

Secure, fast, open-source remote desktop software

Godot

★ FEATUREDC++

Create 2D & 3D games with complete creative freedom

Supabase

★ FEATUREDTYPESCRIPT

The open source Firebase alternative

Immich

★ FEATUREDTYPESCRIPT

Self-hosted photo and video backup solution

Browser Use

★ FEATUREDPYTHON

Leading open-source web agent project with 50k stars in 3 months

Bun

★ FEATUREDZIG

Bun is an incredibly fast all-in-one JavaScript toolkit

Home Assistant

★ FEATUREDPYTHON

Local control smart home with privacy first

Zed

★ FEATUREDRUST

Code at the speed of thought with AI collaboration

LocalSend

★ FEATUREDDART

Share files securely across devices without servers

Hoppscotch

TYPESCRIPT

Open source API development ecosystem

Font Awesome

★ FEATUREDJAVASCRIPT

Icons and social logos for your website.

AppFlowy

DART

Bring projects, wikis, and teams together with AI

Crawl4AI

★ FEATUREDPYTHON

Open-source web crawler optimized for AI/LLMs

Docusaurus

TYPESCRIPT

Easy to maintain open source documentation websites

Alacritty

★ FEATUREDRUST

Modern cross-platform terminal emulator with OpenGL acceleration, extensive configuration options, and vi mode support for enhanced productivity.

Ladybird

★ FEATUREDC++

Truly independent web browser backed by non-profit

PocketBase

GO

Open Source backend in 1 file

Meilisearch

RUST

A lightning-fast search engine that fits effortlessly into your apps

Appwrite

TYPESCRIPT

Your backend, minus the hassle

Gitea

GO

Git with a cup of tea, painless self-hosted git service

Coolify

PHP

An open-source & self-hostable Heroku / Netlify / Vercel alternative