Fast Rust-based formatter and linter for web projects
Biome is a Rust-based toolchain for JavaScript, TypeScript, JSX, JSON, and CSS that combines formatting and linting in a single tool running 20-50x faster than ESLint + Prettier. Provides 300+ lint rules with automatic fixes, opinionated formatting compatible with Prettier output, and import sorting. Zero configuration needed to start with sensible defaults. Designed as a drop-in replacement for ESLint and Prettier with first-class IDE support via VS Code and JetBrains extensions.
Biome is a Rust-based toolchain replacing ESLint + Prettier with a single tool running 20-50x faster. Provides formatting, linting, and import sorting for JS, TS, JSX, JSON, and CSS.
300+ lint rules with auto-fixes. Formatter output compatible with Prettier for easy migration. Zero config needed with sensible defaults.
VS Code and JetBrains extensions for real-time feedback. Custom configuration via biome.json for team requirements.
Biome is 100% free and open-source software licensed under MIT and Apache 2.0, providing an ultra-fast formatter and linter for JavaScript, TypeScript, JSX, and JSON with no licensing fees.
CLI, VS Code, JetBrains, npm
Extremely fast Python linter and formatter written in Rust
Ruff is a Python linter and code formatter written in Rust by Astral that runs 10-100x faster than existing tools like flake8, isort, and Black. It implements over 800 lint rules from dozens of popular plugins in a single binary, handles auto-fixing for most violations, and includes a built-in formatter compatible with Black. Adopted by FastAPI, Hugging Face, Pandas, and Apache Airflow, Ruff has over 38,000 GitHub stars and processes entire codebases in milliseconds.
Rust-powered JavaScript linter that is 50-100x faster than ESLint
Oxlint is an extremely fast JavaScript and TypeScript linter built as part of the OXC (Oxidation Compiler) toolchain written in Rust. It runs 50-100x faster than ESLint by parsing and analyzing code in a single optimized pass without requiring any plugins or configurations. Oxlint ships with 520+ built-in rules covering correctness, performance, and style checks, and is designed to run alongside ESLint during migration. Part of Evan You's VoidZero initiative, OXC has over 20,000 GitHub stars.
High-performance Rust JavaScript toolchain
Oxc is a high-performance collection of JavaScript and TypeScript tools written in Rust by the VoidZero team. It includes a parser, linter, formatter, transpiler, minifier, and module resolver that run 50x faster than their JS equivalents. Oxc powers Rolldown and integrates with Vite, forming the backbone of a unified Rust-based toolchain. With 20K+ GitHub stars and MIT license, it provides drop-in replacements for ESLint, Prettier, and Babel with dramatic speed gains.
Verification dates are editorial checks. Routine CMS saves and automatic updatedAt timestamps do not advance them.
Biome is a Rust-based toolchain for JavaScript, TypeScript, JSX, JSON, and CSS that combines formatting and linting in a single tool running 20-50x faster than ESLint + Prettier. Provides 300+ lint rules with automatic fixes, opinionated formatting compatible with Prettier output, and import sorting. Zero configuration needed to start with sensible defaults. Designed as a drop-in replacement for ESLint and Prettier with first-class IDE support via VS Code and JetBrains extensions.
Yes — Biome is open source and free to use. Biome is 100% free and open-source software licensed under MIT and Apache 2.0, providing an ultra-fast formatter and linter for JavaScript, TypeScript, JSX, and JSON with no licensing fees.
Yes — Biome is open source.
Yes — Biome is active. Its listing was last verified on August 26, 2026.
The first editor-selected Biome alternatives are Ruff, Oxlint, Oxc.
computed discovery: shared active categories
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Drop-in authentication for modern JavaScript apps
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