CloudBerry Explorer

https://www.msp360.com/explorer/
支持的云存储类型多
但是免费版不支持FTP/SFTP
Supports many types of cloud storage
But the free version does not support FTP/SFTP

cyberduck

https://cyberduck.io/
支持大部分主流云存储以及 以及WebDAV SMB FTP SFTP
Supports most mainstream cloud storage and WebDAV SMB FTP SFTP

WINSCP

https://winscp.net/eng/download.php
仅支持Amazon S3 以及WebDAV FTP SFTP
Only supports Amazon S3 and WebDAV FTP SFTP