Carbon Language is an experimental successor to C++ that aims to address the language's technical debt while maintaining performance and interoperability with existing C++ code.
Carbon tackles the problem that C++ has accumulated decades of technical debt making incremental improvements extremely difficult, while modern alternatives like Rust, Go, and Swift create barriers to adoption for existing C++ codebases. Rather than trying to evolve C++ itself, Carbon starts with solid language foundations including a modern generics system, modular code organization, and consistent syntax. It is designed specifically for interoperability with C++, enabling developers to work with existing C++ code including inheritance and templates, and to integrate with current C++ build systems.
Adoption of Carbon is appropriate for teams maintaining large performance-critical C++ codebases who want modern language features without abandoning their existing codebase or accepting performance overhead. The project explicitly states that developers who can use existing modern languages should do so; Carbon targets the specific niche of C++ migration. The tool offers performance matching C++ through LLVM compilation, low-level access to bits and addresses, and fast scalable builds. It provides a batteries-included ecosystem including a compiler, libraries, documentation, tools, and a package manager. The README emphasizes that Carbon is not ready for use and remains experimental.
The project maintains active development with regular design discussions and implementation work across the compiler and language specification. Community governance structures are documented and the project actively solicits contributions through clear contribution guidelines. Development spans both the core language implementation in C++ and supporting tooling, with ongoing refinement of language semantics and interoperability mechanisms.
