S3hub is described as 'View your S3 online storage, upload, download, set permissions, share with friends and more. In order to use S3Hub with an S3 account, you'll need to sign up first' and is an app in the Backup & Sync category. There are six alternatives to S3hub for Windows, Mac and Linux. The best alternative is Cyberduck, which is both free and Open Source. Other great apps like S3hub are CrossFTP (Paid), S3 Browser (Freemium), MSP360 Explorer (Freemium) and Bucket Explorer (Paid).
CrossFTP is an FTP, Amazon S3, Amazon Glacier, and cloud storage client. * CrossFTPs main features: Multi-tab Navigation; Unicode support; Bonjour Service Discovery; Archive browsing(.zip,.tar.gz,etc.); Auto-reconnecting and anti-idle; and more.
MSP360 Explorer provides a user interface allowing to access, move and manage files across your local storage and the cloud storage of your choice. Cloud file management software by MSP360 is available in two versions: Freeware and PRO.