It wasn't my choice (when does the technologist get to choose), but here is a short list: * Silverlight (!) * Adobe Air (about 2 weeks before it was end dated

It wasn't my choice (when does the technologist get to choose), but here is a short list: * Silverlight (!) * Adobe Air (about 2 weeks before it was end dated) * Rhomobile (native multi-platform mobile build, seemed like a good idea at the time...) * Microsoft Service Fabric