File Expert is described as 'File manager / explorer with full access to files on SD card, external SD card, cloud services, SMB, FTP, WebDAV, HTTP, NAS, USB OTG and system internal flash if working on a rooted phone' and is a File Manager in the File Management category. There are more than 25 alternatives to File Expert for a variety of platforms, including Android, Android Tablet, Windows, iPhone and F-Droid. The best alternative is Total Commander, which is free. Other great apps like File Expert are Amaze File Manager (Free, Open Source), Solid Explorer (Paid), MiXplorer (Free) and Simple File Manager (Free, Open Source).
ZArchiver - program to manage archives in android. The program has a simple and functional interface. It lets you create 7z (7zip), zip, bzip2 (bz2), gzip (gz), XZ, tar archives, decompress 7z (7zip), zip, rar, bzip2, gzip, XZ, iso, tar, arj.