Rust
From Just Solve the File Format Problem
Rust is a programming language developed by the Mozilla Research team, to be used in the development of their Servo rendering engine, which may be used in a future web browser. Like many current-day programming languages, it has a syntax which is a variant of C. It features built-in pattern-matching capabilities, as well as features designed for concurrency (spawning multiple processes with access to the same data structures). Data can be designated as mutable or immutable, affecting what sorts of actions may be done to it.