ADev is described as 'A lightweight Android development tool. Wraps the Android SDK's Ant, 'android' and 'adb'' and is an app in the Development category. There are three alternatives to ADev for a variety of platforms, including Windows, Android, Android Tablet, Chrome OS and Linux. The best alternative is Android Studio, which is both free and Open Source. Other great apps like ADev are Basic4Android (Free, Open Source) and AIDE - Android IDE (Freemium).
Android Studio is the official integrated development environment (IDE) for Google's Android operating system, built on JetBrains' IntelliJ IDEA software and designed specifically for Android development.
Basic4android is Simple and powerful RAD tool for developing native Android applications without time-consuming Java / Eclipse programming . - Basic4android includes all features needed to develop great, real-world Android applications.