Compiler Explorer compiles code online and displays the resulting assembly for several programming languages.
Compiler Explorer
Compiler Explorer compiles code online and displays the generated assembly for multiple languages.
About Compiler Explorer
Compiler Explorer is an interactive online compiler that shows assembly output for C++, Rust, Go and other languages. It provides a source editor with compiler and execution views, intermediate outputs such as preprocessor results, AST, LLVM IR and control flow graphs, and options to run code with arguments and stdin and to filter assembly output.
Save and load options use examples, browser-local storage and history, and local files, while settings are stored locally and are not included in shared URLs. An optional Claude Explain feature sends source and compilation output to Anthropic for explanation and is skipped when code contains "no-ai".
Key features
- Show assembly output for C++, Rust, Go and other languages
- Execute code with custom arguments and stdin input
- View intermediate outputs like LLVM IR, AST and preprocessor
- Filter assembly by labels, directives, comments and whitespace
- Toggle Intel syntax and demangle identifiers in output
- Display control flow graph for compiled output
Best for: Developers who want to inspect assembly and intermediate compiler output for source code.
Good for
- Shows assembly output for C++, Rust, Go and other languages
- Provides intermediate views including AST, LLVM IR and preprocessor output
- Supports local save and load through browser storage and files
Watch out for
- Some tools are not supported by every language or compiler
- Settings are stored locally and not included in shared URLs
- AI explanation is skipped when source contains "no-ai"
Compiler Explorer at a glance
- Website
- compiler-explorer.com
- Category
- Development › Code Editors & IDEs
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Compiler Explorer alternatives
Tools and sites you could use instead, ranked by how closely they match.
Ideone compiles and runs code online across C, C++, Java, Python, and many other languages.
Format code consistently with Prettier, an opinionated formatter that supports multiple languages.
CodingGround provides online programming editors and compilers for languages including C, Java, Python, and PHP.
OneCompiler lets users write, run, and share code online in more than 110 programming languages.
Freemium
22 alternativesRun, save, and share code snippets in dozens of programming languages with the glot.io online playground.
Popular in Code Editors & IDEs
Well-known listings from the same topic.
Notebooks.azurevisualstudio.microsoft.com/vs/features/noteboo…Replayreplay.ioVim Bootstrapvim-bootstrap.commyCompilermycompiler.ioDevPoddevpod.shCompetitive Editorcpeditor.org
Compiler Explorer FAQ
Does Claude Explain share my code with another service?
Yes, it sends source code and compilation output to Anthropic for explanation. The text states the data is not used to train their model and is covered by the Privacy Policy, and that LLMs can make mistakes.
How can I save and reload work?
You can load examples, use browser-local storage and history, load from a local file or save to a file, and save the current state as a user template.
Are my settings included in shared URLs?
No, settings are persisted locally using browser local storage and are not preserved as part of shared URLs.
Is something wrong or out of date?
Tell us and an editor will check it.
Own this website?
Claim this listing
Claim the listing and suggest updates yourself. An editor checks every claim first.