S3 Browser - S3 Browser is the name of an easy and simple to use Amazon S3 clients for the Windows operating systems.
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
Cyberduck - A libre FTP, SFTP, WebDAV, S3, Backblaze B2, Azure & OpenStack Swift browser.
FileCloud - FileCloud is an enterprise file share, sync and mobile access solution.
CrossFTP - CrossFTP is a powerful FTP and Amazon S3 client. DownloadDownload CrossFTP/Pro/Enterprise for Windows, Mac . FeaturesCrossFTP.
DragonDisk - A fast and powerful file manager for Google Cloud Storage and Amazon S3 compatible services. Available for Windows, Mac OS X, and Linux.