Apk Installer by Bangalore Android is a free utility tool available for Android devices that allows users to install non-market applications with ease. The app lists all the APKs present in the phone and on the SD card, making it a simple yet very useful file explorer app.

One of the best features of this app is its ability to open APK file types, which is particularly useful for developers. However, it is important to note that users will have to allow third-party apps in their phone settings to use this app. Overall, Apk Installer is a must-have app for anyone looking to install non-market applications on their Android device.