- go by golang, 140k stars. Source code for the Go programming language and its toolchain
- rust by rust-lang, 122k stars. The Rust compiler and standard library source
- TypeScript by microsoft, 112k stars. Typed superset of JavaScript and its compiler
- svelte by sveltejs, 89k stars. Compiler and UI framework that turns components into minimal JavaScript
- julia by JuliaLang, 49k stars. High-performance dynamic language for technical and scientific computing
- zig by ziglang, 43k stars. The Zig programming language and toolchain
- php-src by php, 42k stars. Source code of the PHP interpreter and runtime
- modular by modular, 30k stars. Platform with the Mojo language and MAX for AI model compilation and serving
- hypit by hypit-ai, 30k stars. Agent pipeline that produces video variants from a viral clip
- d2 by d2lang, 26k stars. Text-to-diagram scripting language with a CLI renderer
- ruby by ruby, 24k stars. The Ruby programming language
- mitosis by BuilderIO, 14k stars. Compiler that turns one component source into React, Vue, Svelte, and more
- baml by BoundaryML, 9.5k stars. Typed programming language for defining LLM functions with structured outputs
- tilelang by tile-ai, 9.0k stars. Python DSL for writing high-performance GPU and CPU kernels
- scriptc by vercel-labs, 6.6k stars. Compiler that turns TypeScript into native binaries
- LuaJIT by LuaJIT, 5.8k stars. Mirror of the LuaJIT just-in-time compiler source repository
- cppinsights by andreasfertig, 4.7k stars. Shows C++ source as the compiler sees it, with templates and lambdas expanded
- zenc-lang by Zuhaitz-dev, 4.3k stars. Compiler and language server for a C-like language with a REPL
- goose by aardappel, 3.5k stars. Programming language implementation written in C++
- Booth by Zaneham, 1.8k stars. Open-source compiler for CUDA, Triton and HIP kernels targeting GPUs and CPUs
- dex-lang by google-research, 1.7k stars. Research programming language for typed array processing
- ts-rust by pingdotgg, 1.7k stars. Experimental Rust port of the TypeScript 7 compiler
- spacewasm by nasa, 1.6k stars. WebAssembly interpreter designed for flight-certified embedded systems
- hobbes by morganstanley, 1.2k stars. Language and embedded JIT compiler, used for Haskell-based applications
- aeneas by AeneasVerif, 1.2k stars. Verification toolchain that translates Rust programs for proof assistants
- mercury by Mercury-Language, 1.1k stars. Compiler and runtime for the Mercury logic programming language
- accelerate by AccelerateHS, 1.0k stars. Embedded Haskell language for GPU and parallel array computations
- hmpl by hmpl-language, 970 stars. Server oriented HTML template language that fetches and renders HTML for JavaScript
- glojure by glojurelang, 735 stars. Clojure interpreter in Go with extensible Go interop
- cel-rust by cel-rust, 718 stars. Common Expression Language interpreter written in Rust
- farm.js by farming-labs, 660 stars. Full-stack framework for web apps with an experimental AOT React compiler
- lispe by naver, 608 stars. Lisp interpreter with lazy evaluation, pattern matching and higher-order functions
- polyml by polyml, 580 stars. Standard ML implementation with a compiler and runtime
- pon by can1357, 578 stars. Python 3.14 AOT and JIT native compiler and runtime in Rust using Cranelift
- sectorforth by cesarblum, 504 stars. 16-bit x86 Forth interpreter that fits in a 512-byte boot sector
- crustc by FractalFir, 491 stars. The Rust compiler mechanically translated from Rust into C source
- tsc-ts by vercel-labs, 423 stars. TypeScript compiler implemented in TypeScript
- jolt by jolt-lang, 355 stars. Clojure compiler that targets Chez Scheme
- NetWasm by zion-sati, 353 stars. Compiler that turns C# and .NET CIL into small standalone WASI modules
- wyzer by Wyzer-Lang, 258 stars. Programming language implemented in OCaml
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