https://www.languagelineage.org Guides and data stories on what programming languages are written in, how compilers are bootstrapped, and how languages influenced each other. en-us Tue, 22 Sep 2026 00:00:00 GMT https://www.languagelineage.org/guides/the-c-bootstrap-chain https://www.languagelineage.org/guides/the-c-bootstrap-chain How Python, Rust, Go, JavaScript, Java, Ruby, and Haskell trace their compiler or runtime implementation back to C or C++. 7 chains computed from the Language Lineage dataset. Tue, 22 Sep 2026 00:00:00 GMT https://www.languagelineage.org/rankings/most-influential https://www.languagelineage.org/rankings/most-influential Reverse PageRank over 262 cited influence relationships across 141 languages. Generated, not hand-ranked. Tue, 22 Sep 2026 00:00:00 GMT https://www.languagelineage.org/guides/graalvm-vs-hotspot https://www.languagelineage.org/guides/graalvm-vs-hotspot HotSpot (C and C++) is the standard JVM in OpenJDK. GraalVM replaces the C2 JIT with a Java-written compiler and adds polyglot and Native Image support. Both run the same bytecode. Wed, 09 Sep 2026 00:00:00 GMT https://www.languagelineage.org/guides/typescript-vs-javascript-implementation https://www.languagelineage.org/guides/typescript-vs-javascript-implementation TypeScript adds types to JavaScript. The official compiler tsc is self-hosting TypeScript; swc is written in Rust; esbuild is written in Go. All three transpile to JavaScript. Wed, 09 Sep 2026 00:00:00 GMT https://www.languagelineage.org/guides/v8-vs-spidermonkey-vs-javascriptcore https://www.languagelineage.org/guides/v8-vs-spidermonkey-vs-javascriptcore All three major JavaScript engines are written in C++. V8 powers Chrome and Node.js, SpiderMonkey powers Firefox, and JavaScriptCore powers Safari. Wed, 09 Sep 2026 00:00:00 GMT https://www.languagelineage.org/guides/how-programming-languages-are-made https://www.languagelineage.org/guides/how-programming-languages-are-made Learn how programming languages are designed and implemented. Languages are built using other languages, compilers and interpreters are programs written in existing languages. Wed, 09 Sep 2026 00:00:00 GMT https://www.languagelineage.org/guides/gcc-vs-llvm https://www.languagelineage.org/guides/gcc-vs-llvm GCC and LLVM are the two dominant open-source compiler infrastructures. Both are written in C++. Learn how they differ and which languages use each. Wed, 09 Sep 2026 00:00:00 GMT https://www.languagelineage.org/guides/how-rust-is-bootstrapped https://www.languagelineage.org/guides/how-rust-is-bootstrapped Rust is a self-hosting language. The Rust compiler (rustc) is written in Rust itself. Learn how the Rust bootstrap process works. Wed, 09 Sep 2026 00:00:00 GMT https://www.languagelineage.org/guides/how-python-is-implemented https://www.languagelineage.org/guides/how-python-is-implemented CPython is the reference Python implementation, written in C. PyPy uses RPython. Learn how Python interpreters work and what language each is written in. Wed, 09 Sep 2026 00:00:00 GMT https://www.languagelineage.org/guides/how-javascript-engines-work https://www.languagelineage.org/guides/how-javascript-engines-work JavaScript engines like V8, SpiderMonkey, and JavaScriptCore are written in C++. Learn how they parse, compile, and execute JavaScript code. Wed, 09 Sep 2026 00:00:00 GMT https://www.languagelineage.org/guides/programming-language-family-tree https://www.languagelineage.org/guides/programming-language-family-tree The programming language family tree: how Fortran, LISP, and C influenced and implemented the languages that followed, across 75+ years of compiler and runtime history. Wed, 09 Sep 2026 00:00:00 GMT https://www.languagelineage.org/guides/compiler-vs-interpreter-vs-runtime https://www.languagelineage.org/guides/compiler-vs-interpreter-vs-runtime Understand the difference between a compiler, interpreter, and runtime, and how these determine what language an implementation is written in. Wed, 09 Sep 2026 00:00:00 GMT https://www.languagelineage.org/guides/what-is-self-hosting https://www.languagelineage.org/guides/what-is-self-hosting A self-hosting compiler is a compiler that can compile its own source code. Learn which languages are self-hosting and why it matters. Wed, 09 Sep 2026 00:00:00 GMT https://www.languagelineage.org/guides/what-is-compiler-bootstrapping https://www.languagelineage.org/guides/what-is-compiler-bootstrapping Compiler bootstrapping is the process of writing a compiler for a language in that same language. Learn how it works and which languages use it. Wed, 09 Sep 2026 00:00:00 GMT