Shypd.aiThe largest open index of AI toolsSteel is an open-source embedded Scheme interpreter built in Rust, offering a bytecode virtual machine for scripting and extensibility. It supports R5RS, modules, macros, and easy integration with native Rust functions.
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Steel is an open-source, embeddable Scheme interpreter implemented in Rust, designed for scripting and extending Rust applications. It functions as a bytecode virtual machine and is largely compliant with the R5RS standard, with R7RS support currently under development. Key features include support for modules using `require` and `provide` (similar to Racket), `syntax-rules` and `syntax-case` macros, and seamless integration with native Rust functions and structs via embedding or FFI. It also provides higher-order contracts and built-in immutable data structures like lists, vectors, hashmaps, and hashsets. A standalone interpreter/REPL is included, and it can be installed via Cargo, Nix, or used through an online playground. The API is considered relatively stable but may undergo changes before version 1.0.
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