# compiler-explorer/compiler-explorer

Run compilers interactively from your web browser and interact with the assembly

Repository: https://github.com/compiler-explorer/compiler-explorer
Canonical: https://ross.abutalabs.com/products/compiler-explorer
Homepage: https://godbolt.org
Language: TypeScript
License: BSD-2-Clause
License Family: permissive
Topics: rust, c-plus-plus, go, dlang, compiler, cpp, assembly, ispc, haskell, swift, rust-lang, hacktoberfest, c, haskell-language, python
Last push: 2026-08-26T14:34:56+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 5216, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 19006, forks 2099 (observed 2026-08-28T04:11:27.347077+00:00)

## What it is
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
- artifact type: application
- maturity: active
- function: compiler, developer-tools, documentation, data-visualization
- domain: developer-tools, compilers, education, performance
- platform: cross-platform, self-hosted
- tags: assembly, compilers, interactive, godbolt, code-exploration, optimization, learning, web-server, nodejs

## Member repositories
- compiler-explorer/compiler-explorer (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:27.347077+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:00:42.255648+00:00, confidence not recorded.
  - readme: https://github.com/compiler-explorer/compiler-explorer (fetched 2026-08-28T04:11:27.347077+00:00, sha 856770b400f9)
  - homepage: https://godbolt.org (fetched 2026-08-29T07:59:17.431985+00:00, sha e137ffb9aa48)
  - site_page: https://godbolt.org/admin/libraries.html (fetched 2026-08-29T07:59:17.441622+00:00, sha 19530417d19d)
- Data as of 2026-08-30T08:39:29.467469+00:00.