A collective list of free APIs

Open-source Windows and Office activator featuring HWID, Ohook, TSforge, KMS38, and Online KMS activation methods, along with advanced troubleshooting.

Virtual whiteboard for sketching hand-drawn like diagrams

An open-source remote desktop application designed for self-hosting, as an alternative to TeamViewer.

A fancy self-hosted monitoring tool

Explain complex systems using visuals and simple terms. Help you prepare for system design interviews.

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

Get a full fake REST API with zero coding in less than 30 seconds (seriously)

#1 Locally hosted web application that allows you to perform various operations on PDF files

simple terminal UI for git commands

Odoo. Open Source Apps To Grow Your Business.

An open-source, self-hostable PaaS alternative to Vercel, Heroku and Netlify that lets you easily deploy static sites, databases, web applications and more than 280 one-click services on your own s…

Presentation Slides for Developers

Penpot: The open-source design tool for design and code collaboration

best way to save what you love

Free, simple, and intuitive online database diagram editor and SQL generator.

A community-supported supercharged document management system: scan, index and archive all your documents

Servo aims to empower developers with a lightweight, high-performance alternative for embedding web technologies in applications.

🌈 React for interactive command-line apps

CasaOS - A simple, easy-to-use, elegant open-source Personal Cloud system.

🔥 1Panel provides an intuitive web interface and MCP Server to manage websites, files, containers, databases, and LLMs on a Linux server.

Javascript Canvas Library, SVG-to-Canvas (& canvas-to-SVG) Parser

A private messenger for Android.

Send push notifications to your phone or desktop using PUT/POST

🧠 Laws, Theories, Principles and Patterns for developers and technologists.

Official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.

String validation

An open source graphics editor for 2025: comprehensive 2D content creation tool suite for graphic design, digital art, and interactive real-time motion graphics — featuring node-based procedural ed…

Haptic input knob with software-defined endstops and virtual detents

Database diagrams editor that allows you to visualize and design your DB with a single query.