Bluebird made a name for itself by really, really focusing on V8-specific optimizations. Also it has added a lot of features that go beyond the promise spec, th

Bluebird made a name for itself by really, really focusing on V8-specific optimizations. Also it has added a lot of features that go beyond the promise spec, thus becoming one of those bandwagony swiss army knife sort of libraries. I personally use it for how efficient it is in Node.