What is Compiler Explorer?
Compiler Explorer, also known as Godbolt, shows the assembly code your program compiles to, live as you type. It supports C, C++, Rust, Go, Zig, Swift and dozens of other languages with hundreds of compiler versions.
You can compare compilers and optimization flags side by side, run code, and share a short link. It is a favorite tool for performance work and for understanding what compilers really do.
Key features
- Live assembly output as you type
- Hundreds of compilers and versions
- Compare multiple compilers side by side
- Execute code and share links
Pros
- Unique insight into compiler output
- Huge compiler selection
- Open source
Cons
- Assembly needs some knowledge to read
- Not a full IDE
Best for
Ratings and reviews
No reviews yet. Community ratings and reviews are coming soon, so you can share how Compiler Explorer worked for you.
Compiler Explorer FAQ
Is Compiler Explorer free?
Compiler Explorer is free and open source with no account.
Do I need an account to use Compiler Explorer?
No. Compiler Explorer works without signing up, so you can open godbolt.org and start using it right away.
What are some alternatives to Compiler Explorer?
Similar free tools that also work without an account include Regex101, CyberChef, Crontab Guru, Transform, JSON Crack and Carbon.