Sparkplug is a new JavaScript compiler that fills the gap between needing to start executing quickly and optimizing the code for maximum performance.

Google says its new JavaScript compiler saves 17 years of Chrome users' CPU time each day. It should also benefit all Chromium browsers that use it.

Apple integrates LLVM compiler to boost WebKit JavaScript performance Since compilers already make fast code, why not take advantage?

Mozilla beefing up JavaScript performance with new JIT compiler IonMonkey JavaScript will debut with Firefox 18 in early 2013.

Cheerp, a C++ compiler that generates JavaScript code for use in any browser, is being upgraded this week with improved performance, reduced output code size, and backing for 64-bit integers ...

Google says the latest Google Chrome release comes with a significant performance boost due to newly added improvements to the open-source V8 JavaScript and WebAssembly engine.