Hew

Hew is a statically-typed, actor-oriented programming language I’m building for concurrent and distributed systems. The actor model is the centerpiece: typed message passing and lightweight actors are first-class, so concurrency is part of the language rather than bolted on through a library.

The implementation is a two-language affair — the compiler backend is C++20 built on MLIR and LLVM, while the surrounding toolchain (lexer, parser, type checker, runtime, formatter, and LSP) is written in Rust. It ships as a real CLI: hew run, hew check, hew fmt, an interactive REPL via hew eval, and project scaffolding with hew init.

There’s a full site at hew.sh with docs, a tutorial, and a browser playground that sandboxes user code with gVisor. I’ve put real effort into onboarding too, with structured example paths that walk you from hello-world up to actors one step at a time.