compiler-explorer/compiler-explorer

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

19006 stars · 2099 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Compiler Explorer is an interactive web application for compiling code in 30+ languages (C, C++, Rust, Go, Haskell, Swift, and more) and viewing the resulting assembly, IR, or other compiler outputs in real time. It powers godbolt.org, serves millions of compilations weekly, and can also be self-hosted.

Use cases

• see what assembly my C++ code compiles to
• compare compiler output between gcc and clang
• learn how compiler optimizations affect generated code
• inspect LLVM IR or Rust MIR for a code snippet
• share a compiler repro link when reporting a bug
• check which instruction set extensions my code uses
• run a local instance to explore a private toolchain

When to choose

• you want to understand how source code maps to assembly or intermediate representations
• you need to compare outputs across compilers, versions, and flags quickly
• you are teaching or learning compilers, systems programming, or optimization
• you want a shareable permalink for a compilation example

When to avoid

• you need a full IDE with project builds, debugging, or version control integration
• you require building large multi-file projects rather than small snippets
• you need guaranteed reproducible builds in a controlled environment

Facets

application · maturity active

compiler developer-tools documentation data-visualization developer-tools compilers education performance cross-platform self-hosted assembly compilers interactive godbolt code-exploration optimization learning web-server nodejs

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markdown · JSON · MCP: product_card(name="compiler-explorer/compiler-explorer")