File managers

ZArchiver Donate
ZDevs(Paid)
Download
How to Donate to Charity With ZArchiver
Root Explorer
Speed Software(Paid)
Download
Root Explorer: Useful tool for file management
Call History Manager
Passionate Androiden(Free)
Download
Call History Manager: The solution to manage your calls
OPPO Clone Phone
ColorOS(Free)
Download
Free app to move your data
Documents by Readdle VIP
OBHDAWN(Free)
Download
Documents by Readdle VIP - Your Ultimate PDF/Text Conversion Assistant
ZenUI Dialer & Contacts
ZenUI ASUS Computer Inc.(Free)
Download
Free all-in-one contact dialer
Google Drive
google(Free)
Download
Store Your Life on Google Drive
Huawei File Manager
bender_007(Free)
Download
A Quick Overview of Huawei File Manager for Android
On-screen Ruler
NeedJava(Free)
Download
On-screen Ruler- Free floating ruler on your Android device
Amaze File Manager
Team Amaze(Free)
Download
A free program for Android, by Team Amaze.