Users interested in Bb sideloading tool generally download:
BB10 Sideloading Tool allows you to install BAR files on your BlackBerry Z10, Q10, Q5 or BlackBerry PlayBook. The program also allows you to convert any Android APK file into a BlackBerry BAR file and sideload it onto your device. You also need the Java Runtime Environment (JRE) in order to install apps.
Facebook Messenger is a messaging service which allows Facebook users to chat with friends right from the desktop, but not only that, using it they'll be notified of new friend requests and messages. The idea of the application is great as when we surf the net or use some other app, this service will definitely come in handy, because we won't have to click away to stay in touch with friends.