Despite its slightly controversial conversion from being a free beta app to paid in the final version, Solid Explorer continues to be one of the most powerful, versatile, and best-supported apps on Android – especially in the file manager category. The app recently received an update that makes it even more powerful, specifically in the area of cloud storage: the app now has SugarSync support, as well as improved libraries for Box and SkyDrive.
Those aren't the only improvements wrapped in this update, either:
What's in this version:
-backup and restore settings
-ability to set a wallpaper and a ringtone
-creating symbolic links
-last open folder is remembered even after app kill
-charset selection in text editor
-updated Box and SkyDrive libraries
-option to keep the screen on during file transfers
-other minor improvements
If you're looking for a mature, feature-rich file manager, you'll be hard pressed to find one better than Solid.