What is Monaca?
You can pick suitable development environment from cloud IDE, CLI, desktop GUI and visual studio. Packed with everything you need for hybrid app development - such as on-device debugger, comprehensive debugging tools, remote build and build/config management.
Monaca provides Onsen UI framework as a UI companion, but you can also use a framework of your choice.
Comments and Reviews
Said about Monaca as an alternative
Monaca makes it much easier to develop PhoneGap/Cordova apps with all the things needed in one place.
Great platform to develop and build Cordova/PhoneGap apps. Great alternative to PhoneGap Build.