What are some alternatives?
When comparing Air Explorer and RaiDrive, you can also consider the following products
odrive - Odrive aggregates all cloud storage accounts in one system and keeps it synchronized, sharable and encrypted.
NetDrive - Cloud storage as hard disk
Koofr - Koofr offers safe EU based cloud storage with free storage space for life and options to connect multiple cloud accounts (Dropbox, Google Drive, OneDrive) and your personal storages.
Rclone - rsync for cloud storage.
WebDrive - WebDrive File Access Client allows you to open and edit server-based files without the additional step of downloading the file.
ExpanDrive - ExpanDrive is a fast network drive and browser for cloud storage.