# hsutter/cppfront

A personal experimental C++ Syntax 2 -> Syntax 1 compiler

Repository: https://github.com/hsutter/cppfront
Canonical: https://ross.abutalabs.com/products/cppfront
Language: C++
License: NOASSERTION
License Family: other
Last push: 2026-07-17T10:10:15+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 93, release rhythm 16, longevity 100
- inputs: {"age_days": 1813, "days_push": 47, "days_rel": 580, "gap_med": 91, "n_releases_24m": 2}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5995, forks 268 (observed 2026-08-28T04:09:34.086776+00:00)

## What it is
cppfront is an experimental compiler that translates a new 'Syntax 2' (Cpp2) flavor of C++ into standard 'Syntax 1' (Cpp1) C++ code. It serves as a prototype for evolving the C++ language itself, generating output that works with existing C++20+ compilers and toolchains.

## Use cases
- try an experimental cleaner C++ syntax
- prototype proposed C++ language features
- write safer simpler C++ that compiles to standard C++
- experiment with future C++ standardization ideas
- use Cpp2 alongside existing C++20 toolchains

## When to choose
- you want to experiment with or give feedback on proposed C++ syntax evolution
- you want a simpler, safer 'skin' for writing ordinary C++ that interoperates with existing compilers and libraries
- you are prototyping language features for C++ standardization proposals

## When to avoid
- you need a production-stable compiler for shipping software
- you want a separate successor language with its own ecosystem
- you need guaranteed long-term support or standards compliance

## Facets
- artifact type: cli-tool
- maturity: experimental
- function: compiler, programming-language, developer-tools
- domain: programming-languages, compilers, developer-tools
- platform: cpp, cross-platform, cli
- tags: cpp2, cpp1, syntax-transpiler, language-design, herb-sutter, c++, compiler

## Member repositories
- hsutter/cppfront (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:34.086776+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 2026-08-30T08:31:21.056606+00:00, confidence not recorded.
  - readme: https://github.com/hsutter/cppfront (fetched 2026-08-28T04:09:34.086776+00:00, sha df669f06eb37)
- Data as of 2026-08-30T08:39:29.467469+00:00.