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+---
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+---
+
+# development & code tools
+
+the strongest category. these actually change your workflow.
+
+## must-install
+
+### testing & quality
+- **[webapp-testing](https://github.com/anthropics/skills/tree/main/skills/webapp-testing)** — Playwright-based web app testing. **official Anthropic skill.** see [[official]].
+- **[test-driven-development](https://github.com/obra/superpowers/tree/main/skills/test-driven-development)** — enforces TDD: write tests before implementation, 85-95% coverage targets. from [[frameworks|obra/superpowers]].
+- **[Playwright Browser Automation](https://github.com/lackeyjb/playwright-skill)** (2.4k stars) — model-invoked Playwright for general browser automation. by @lackeyjb
+- **[systematic-debugging](https://github.com/obra/superpowers/tree/main/skills/systematic-debugging)** — structured debugging methodology. from obra/superpowers.
+
+### git & branching
+- **[finishing-a-development-branch](https://github.com/obra/superpowers/tree/main/skills/finishing-a-development-branch)** — guides branch completion with clear workflow options. obra/superpowers.
+- **[using-git-worktrees](https://github.com/obra/superpowers/blob/main/skills/using-git-worktrees/)** — isolated worktrees with smart directory selection. obra/superpowers.
+- **[Changelog Generator](https://github.com/ComposioHQ/awesome-claude-skills/tree/main/changelog-generator/)** — transforms git commits into user-facing release notes.
+
+### architecture
+- **[software-architecture](https://github.com/NeoLabHQ/context-engineering-kit/tree/master/plugins/ddd/skills/software-architecture)** — Clean Architecture, SOLID principles. from [[frameworks|NeoLab's context-engineering-kit]].
+- **[subagent-driven-development](https://github.com/NeoLabHQ/context-engineering-kit/tree/master/plugins/sadd/skills/subagent-driven-development)** — dispatches subagents with code review checkpoints.
+- **[adversarial-spec](https://github.com/zscole/adversarial-spec)** (523 stars) — iteratively refines specs by debating between multiple LLMs.
+- **[cc-sdd](https://github.com/gotalab/cc-sdd)** (3.1k stars) — spec-driven development, Kiro-style commands.
+
+## strong picks
+
+### research & planning
+- **[planning-with-files](https://github.com/OthmanAdi/planning-with-files)** (18.5k stars) — Manus-style persistent markdown planning. widely adopted.
+- **[deep-research](https://github.com/sanjay3290/ai-skills/tree/main/skills/deep-research)** — autonomous multi-step research via Gemini Deep Research Agent. see also [[data-and-analysis]].
+- **[last30days](https://github.com/mvanhorn/last30days-skill)** (20.7k stars) — researches any topic across Reddit, X, YouTube, HN, Polymarket, web. was #1 trending on GitHub. see also [[communication-and-writing]].
+
+### code quality & review
+- **[requesting-code-review](https://github.com/obra/superpowers/tree/main/skills/requesting-code-review)** / **[receiving-code-review](https://github.com/obra/superpowers/tree/main/skills/receiving-code-review)** — two-stage code review process. obra/superpowers.
+- **[claude-review-loop](https://github.com/hamelsmu/claude-review-loop)** (641 stars) — automated code review loop with Codex.
+- **[verification-before-completion](https://github.com/obra/superpowers/tree/main/skills/verification-before-completion)** — prevents premature task completion. obra/superpowers.
+
+### specialized
+- **[aws-skills](https://github.com/zxkane/aws-skills)** — AWS CDK best practices, serverless, cost optimization.
+- **[iOS Simulator](https://github.com/conorluddy/ios-simulator-skill)** — Claude interacts with iOS Simulator. by @conorluddy
+- **[Axiom](https://github.com/CharlesWiltgen/Axiom)** (810 stars) — battle-tested iOS/iPadOS/watchOS/tvOS development.
+- **[SwiftUI-Agent-Skill](https://github.com/twostraws/SwiftUI-Agent-Skill)** (3.5k stars) — SwiftUI best practices. by Paul Hudson (Hacking with Swift).
+- **[dotnet-skills](https://github.com/Aaronontheweb/dotnet-skills)** (767 stars) — skills for .NET developers.
+- **[godogen](https://github.com/htdt/godogen)** (2.8k stars) — builds complete Godot 4 projects from a game description.
+- **[webgpu-claude-skill](https://github.com/dgreenheck/webgpu-claude-skill)** (591 stars) — WebGPU development with Three.js.
+
+### browser & environment
+- **[dev-browser](https://github.com/SawyerHood/dev-browser)** (5.7k stars) — gives agents web browsing ability.
+- **[agent-sandbox-skill](https://github.com/disler/agent-sandbox-skill)** — isolated E2B cloud sandbox for dev without touching local filesystem.
+- **[browserwing](https://github.com/browserwing/browserwing)** (1.2k stars) — turns browser actions into MCP commands or Claude Skills.
+
+### utility
+- **[Claude Code Terminal Title](https://github.com/bluzername/claude-code-terminal-title)** — dynamic terminal titles describing current work.
+- **[skill-codex](https://github.com/skills-directory/skill-codex)** (1.1k stars) — delegates prompts from Claude to Codex.
+- **[jules](https://github.com/sanjay3290/ai-skills/tree/main/skills/jules)** — delegate to Google Jules for async GitHub work. by @sanjay3290
+- **[cartographer](https://github.com/kingbootoshi/cartographer)** (540 stars) — maps codebases using parallel AI subagents.
+- **[codebase-to-course](https://github.com/zarazhangrui/codebase-to-course)** (3.4k stars) — converts any codebase into an interactive HTML course.
+
+## notable collections
+
+see [[frameworks]] for the full breakdown of multi-skill systems (obra/superpowers, NeoLab, etc.)
+
+also see: **[addyosmani/agent-skills](https://github.com/addyosmani/agent-skills)** (12.8k stars) — production-grade engineering skills from Addy Osmani (Google Chrome team).
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