A unified platform for writing, executing, and understanding code across multiple programming languages.
We believe code should be beautiful, approachable, and accessible. Syntax is a tool for everyone—whether you're learning your first language, refining your skills, or building complex systems. We empower developers with real-time feedback, seamless execution, and expressive syntax analysis.
Get real-time analysis on syntax correctness, performance, and best practices across over 20+ supported languages.
Run your code instantly, with live output and debugging capabilities all within your browser.
Work with Python, JavaScript, C++, Rust, and more. Add custom languages or syntax rules in seconds.
Syntax is an open-source community project maintained by developers who love code as much as you do. Our team is distributed, diverse, and passionate about building tools that inspire developers around the world.
Want to get involved? Check out our contributors page.