4 alternatives to ESLint (all free)
4 alternatives to ESLint, picked out of 1 saved Instagram reel and 3 liked tweets, from creators like @rauchg, @codenameposhan, @colderoshay. 4 of them are free, freemium or open source.
agent-skills is Vercel's official collection of packaged rules and instructions designed for AI coding agents like Claude Code and Cursor. It equips agents with decades of production engineering knowledge, including prioritized React and Next.js performance optimizations, web design guidelines, and one-click Vercel deployment scripts. Agents automatically call these structured markdown guidelines and scripts when performing code reviews, refactoring, or auditing UI.
Code Simplifier is an official Anthropic plugin for Claude Code that refines recently changed code for clarity and maintainability while preserving functionality. It reduces nesting depth, replaces convoluted logic like nested ternaries with cleaner control flow, and aligns code with standards like ES modules and React best practices. It helps prevent messy AI-generated code from entering pull requests.
Rams is an automated design evaluation engine that inspects UI code written by developers or AI agents. It evaluates pull requests and commits against 348 design, accessibility, and craft rules, returning a 0–100 score along with actionable code patches.
react-doctor is an open-source static analysis and performance auditing tool built specifically for React applications. It scans codebases for state, effect, architecture, accessibility, and performance issues, highlighting common pitfalls often introduced by AI coding assistants. It works locally via the CLI, integrates as a skill in tools like Claude Code and Cursor, and runs in CI pipelines.