schemeXr

schemeXr is a dialect of Scheme developed to provide high performance for scripting, data processing, and embedding in host applications. It retains S-expression syntax, hygienic macros, and lexical scoping, while exposing modern APIs and a flexible module system. It aims for fast startup, predictable memory usage, and interoperability.

Implementation and backends: It includes an LLVM-based native compiler, a JIT virtual machine, and a bytecode interpreter. The runtime supports precise, generational garbage collection, tail-call optimization, and first-class continuations. The FFI allows calling C, Rust, or Python libraries. Optional type hints allow static checks and performance optimization.

Modules and ecosystem: schemeXr ships with a standard library focused on data processing, network I/O, and concurrency primitives; a package manager schemeXr-pkg simplifies distribution. The language has bindings to JSON, HTTP, and SQLite. It is designed to be embedded as an extension language in host applications; several projects report using it for configuration and scripting.

Adoption and reception: It has a small but active community, with academic projects exploring DSLs and domain-specific languages. Development is open-source under a permissive license.