XS: A programming language. Anywhere, anytime, by anyone

XS is a lightweight, all-in-one programming language that bundles a compiler, debugger, formatter, linter, and package manager into a single 2.9MB binary. It supports cross-platform development across Linux, macOS, Windows, mobile devices, and embedded systems with identical source code, and offers multiple execution backends including a JIT compiler, bytecode VM, and C/JavaScript transpilers. The language features fast startup times (3ms for hello world) and competitive performance benchmarks compared to Node.js and Python.