# 13 Developer Tools tools (11 free)

13 Developer Tools resources, picked out of 2 saved Instagram reels and 11 liked tweets, from creators like @leodev, @vercel, @benjitaylor. 11 of them are free, freemium or open source.

## All 13

- [react-best-practices](https://xiry.app/resources/react-best-practices): Curated React performance rules and coding-agent skills by Vercel (GitHub repo, Open source)
- [Agentation](https://xiry.app/resources/agentation): Connects AI coding agents to browser annotations for automated UI reviews (Web app, Open source)
- [claude-office-skills](https://xiry.app/resources/claude-office-skills): Office document creation and editing skills for Claude Code CLI. (GitHub repo, Open source)
- [Domain SDK](https://xiry.app/resources/domain-sdk): TypeScript SDK for adding and managing custom customer domains across platforms (GitHub repo, Open source)
- [ECC](https://xiry.app/resources/ecc): Agent harness optimization system with skills, hooks, and configs for coding agents (GitHub repo, Open source)
- [Eight Dev Tools, Zero Fluff — Part 6](https://xiry.app/resources/eight-dev-tools-zero-fluff-part-6): Curated list of eight front-end design and developer utility tools (List)
- [Framecap](https://xiry.app/resources/framecap): Command-line screen, camera, and audio recorder for macOS (Web app)
- [Hemingway AI](https://xiry.app/resources/hemingway-ai): Turn local dev sites into live copy editors that write to source (Web app, Open source)
- [Natural Language Postgres](https://xiry.app/resources/natural-language-postgres): Query a Postgres database with natural language and visualize results. (Web app, Open source)
- [Repomix](https://xiry.app/resources/repomix): Packs entire codebases into single AI-friendly files for LLM prompts (GitHub repo, Open source)
- [Social SDK](https://xiry.app/resources/social-sdk): Typed TypeScript SDK for publishing, analytics, and interactions across social platforms (Web app, Open source)
- [visual-json](https://xiry.app/resources/visual-json): Open-source, schema-aware visual editor for JSON and YAML structures. (Web app, Open source)
- [VS Code Port Forwarding for Mobile Testing](https://xiry.app/resources/vs-code-port-forwarding-for-mobile-testing): Tunnel local web servers to mobile devices directly inside Visual Studio Code (Tip, Free)

More topics in Development: [UI Components](https://xiry.app/topics/development/ui-components.md), [Web Scraping](https://xiry.app/topics/development/web-scraping.md), [Browser Automation](https://xiry.app/topics/development/browser-automation.md), [AI Coding Tools](https://xiry.app/topics/development/ai-coding-tools.md), [AI Coding Prompts](https://xiry.app/topics/development/ai-coding-prompts.md), [Boilerplates & Starters](https://xiry.app/topics/development/boilerplates-starters.md), [AI Coding Workflows](https://xiry.app/topics/development/ai-coding-workflows.md), [AI Workflows](https://xiry.app/topics/development/ai-workflows.md), [Server Security](https://xiry.app/topics/development/server-security.md)

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