S3 Browser
S3 Browser - Windows Client for Amazon S3. User Interface for Amazon S3. Allows you to manage your Amazon S3 Buckets and files with ease!
A libre FTP, SFTP, WebDAV, S3, Backblaze B2, Azure & OpenStack Swift browser.
Cyberduck is an open source FTP client.
With an easy to use interface, connect to FTP (File Transfer Protocol), SFTP (SSH Secure File Transfer), WebDAV (Webbased Distributed Authoring and Versioning), Amazon S3, Google Storage, Windows Azure, Rackspace Cloud Files and even Google Docs.
Cyberduck includes a bookmark manager and supports the Mac OS X Keychain and Bonjour networking.
Official Website
Source
Twitter
Multiple languages Support for WebDAV Support for FTP Support for SFTP Open API Secure Copy (SCP)
Productivity Developer Tools Online Services File Sharing Backup and Sync File Management
file-sharing file-upload online-backup multi-language webdav file-transfer-protocol ftp-support ftp-upload sftp dropbox google-docs file-transfer secure-file-transfer open-api file-transfer-service file-transfer-services file-transferring file-transferring-service file-transferring-services cloudfiles sftp-clients rackspace ftps secure-cloud-storage donationware amazon scp ftp-program cloudfront secure-file-sharing file-transfer-manager file-transfert ftp-share google-storage limelight secure-file-transfer-protocol transfer-sftp