What are some alternatives?
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
Mendix - Mendix is the fastest and easiest low-code platform used by businesses to create and continuously improve mobile and web apps at scale.
Android Studio - Android development environment based on IntelliJ IDEA
Xcode - Xcode 4 is the new version of Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.
Zoho Creator - Create custom apps for your unique business needs.
deployd - API development tool for Web and Mobile developers.