OpenBOR (short for Open Beats of Rage) is a free, open-source, sprite-based 2D side scrolling video game engine (not a console emulator) for Windows, Linux, Android, PSP and WII platforms. Users from all over the world have used it to create a lot of interesting Doujin games based on Double Dragon, Streets of Rage, Final Fight, The King Of Fighters, Street Fighter, Metal Slug, and more.

FlightGear Flight Simulator (FlightGear or FGFS for short) is a free, open-source and cross-platform atmospheric and orbital flight simulation tool that was started by David Murr in 1996 and first released in 1997, now developed by FlightGear developers & contributors around the world. If you've ever dreamed of flying a plane, then you'll love FlightGear.

XEBRA is a little-known but excellent free PlayStation emulator for Windows and Android platforms, developed by Dr.Hell from Japan. It strictly focuses on the accuracy of PlayStation emulation, does not use any plugins, and only outputs in native video resolution. At the same time, it is also one of the very few PSX emulators that is compatible with PocketStation.

Google Camera (AKA: GCam, GCam APK) is a very powerful camera phone application for Android OS, developed by Google in 2014. It was initially supported on all devices running Android 4.4 and higher, but now only officially supports Google Pixel devices. It's easier to use, takes better photos/videos, is smarter, performs better, and is more versatile than many of its peers. In short, it's the easiest way to get the most out of a phone's camera.

Office Tool Plus is simple yet very helpful one-stop deploying tool specially designed for Microsoft Office, developed by Yerong (a senior high school student) from China. It is primarily used to quickly download, configure/customize, install, activate and manage all Microsoft Office products.