addyosmani/agent-skills : Production-grade engineering skills for AI coding agents.
Skills encode the workflows, quality gates, and best practices that senior engineers use whe...
Get Shit Done : A light-weight and powerful meta-prompting, context engineering and spec-driven development system for Claude Code, OpenCode, Gemini CLI, Kilo, Codex,...
Spec Kit : An open source toolkit that allows you to focus on product scenarios and predictable outcomes instead of vibe coding every piece from scratch.
sim : Open-source platform to build and deploy AI agent workflows.
Run a team of coding agents on your Mac.
Create parallel Codex + Claude Code agents in isolated workspaces. See at a glance what they're working on, then review and merge their changes.