wp-downloadmanager https://wordpress.org/plugins/wp-downloadmanager/screenshots/
Wordpress download-manager
https://wordpress.org/plugins/download-manager/screenshots/
WP Attachments
wordpress独立下载页面插件：xydown
WP Better Attachments
http://dholloran.github.io/wp-better-attachments/
wordpress国内备份神器，附件、图片、视频百度网盘直连插件：WP2PC