Top DEVELOPMENT GitHub Repositories & Tools (2026)

winapp, the Windows App Development CLI, is a single command-line interface for managing Windows SDKs, packaging, generating app identity, manifests, certificates, and using build tools with any app framework.

A simple zero-config tool to make locally trusted development certificates with any names you'd like.

An Android app to remap the buttons on your devices

Native-session control plane for Codex, Claude Code, OpenCode, OMP and PI. Run, resume and hand off coding sessions across your machines.

A framework for building native applications using React

Cross-platform app development in Rust

Microsoft Fluent UI Blazor components library. For use with ASP.NET Core Blazor applications

Polytoria, a multiplayer gaming platform built with Godot and .NET

Cross-platform, customizable ML solutions for live and streaming media.

Local development against a remote Kubernetes or OpenShift cluster

:mailbox: SMTP Server + Web Interface for viewing and testing emails during development.

Redot Engine – Multi-platform 2D and 3D game engine

Run any process, on your machine or in an AI agent's environment, as if it were a pod in your Kubernetes cluster: real env vars, DNS, network, traffic.

AI Skills, MCP Tools, and CLI for Unity Engine. Full AI develop and test loop. Use cli for quick setup. Efficient token usage, advanced tools. Any C# method may be turned into a tool by a single line. Works with Claude Code, Gemini, Copilot, Cursor and any other absolutely for free.

Chat, specs, tasks, and code. An autonomous engineering platform. Full autonomy when you trust it. Full control when you don't.

Develop your applications directly in your Kubernetes Cluster

An improved implementation of the Ralph Wiggum technique for autonomous AI agent orchestration

NUnit Framework

Web, Desktop & Mobile client and orchestrator for Codex, Claude Code, OpenCode, Pi, Cursor, Grok, Antigravity, Kimi, Augment Code, Qwen, fully end-to-end encrypted

Rednex Game Boy Development System - An assembly toolchain for the Nintendo Game Boy and Game Boy Color