IT TOOLS
File management
Total Commander is a Midnight Commander / Norton Commander type file management tool for Android. Plugins are available for LAN, FTP, SFTP, WiFi and Google Drive
WiFi
WiFi Analyzer is a tool that reports information on nearby WiFi networks, including SSID, signal strength, etc.
Network Signal Info reports information about both WiFi and cellular connections.
Security
Bluebox Security Scanner searches for and reports unpatched components as well as potentially malicious apps.
MalwareBytes Antimalware scans for and removes malware on Android devices.
EDUCATION
AutoMath Photo Calculator is a software tool that can solve math (algebra) equations; you can even enter equetions into the terminal by taking a picture of the equation you want to solve
MUSIC
Tuner applications:
GAMES
MISC.
Ambio plays sound loops for relaxation and helping to get to sleep