It's "Quick" in the sense that it's a bytecode interpreter instead of a heavyweight JIT, so much faster startup times (although overall compute performance is m

It's "Quick" in the sense that it's a bytecode interpreter instead of a heavyweight JIT, so much faster startup times (although overall compute performance is much slower). And the library is much smaller than more heavyweight engines like V8, so good for reducing overall app size. Recently Facebook had to implement a whole new non-JIT Javascript engine just for the purpose of optimizing startup times for React Native apps (https://github.com/facebook/hermes https://github.com/facebook/hermes). If you consider how even Facebook had to ditch the V8 JIT for their purpose it's totally understandable why Sciter chose QuickJS as their new Javascript engine.