Top DEVELOPMENT GitHub Repositories & Tools (2026)

A collective list of free APIs

An agentic skills framework & software development methodology that works.

Curated list of project-based tutorials

💫 Toolkit to help you get started with SDD or any other process!

Spec-driven development (SDD) for AI coding assistants.

Bash is all you need - A nano claude code–like 「agent harness」, built from 0 to 1

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

VS Code in the browser

Secure environments for developers and their agents

Flutter makes it easy and fast to build beautiful apps for mobile and beyond

A refreshingly simple data-driven game engine built in Rust

Dynamic, resilient AI orchestration. Coordinate data, models, and compute as you build AI workflows.

Curso de SDD (Spec-Driven Development) desde cero

Open-source, Herd-like local PHP development environment for Linux and macOS. Automatic .test domains, per-project PHP/Node isolation, one-command TLS. Podman-native, rootless.

Android Emulator for iOS

AI Kanban & Development Environment. Orchestrate multiple agents, review changes, open PRs. Multi-provider, self-hostable, no telemetry.

The ZAP by Checkmarx Core project

Your agent invents things because it has no memory, and can't touch your database because it has no arms. rsc is the meta-harness that gives it both, plus the trade to know the job and the reflexes to not break your repo. For Claude Code, Codex and 15 more.

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.