Of-course there is youtube-dl, if you are a command line fan.
Amber introduced me to GetThemAll (but sadly it is in trouble),
don't know if it actually runs mining code or there is a google vendetta against the download manager.
- still available as an Android app.
https://play.google.com/store/apps/details?id=com.fvd&hl=en
Candidates for review:
* Chrono Download Manager:
https://chrome.google.com/webstore/detail/chrono-download-manager/mciiogijehkdemklbdcbfkefimifhecn
* Bulk Media Download Manager:
- I like that it does not continuously monitor the network traffic, only when asked.
- Going to try this one first
https://chrome.google.com/webstore/detail/bulk-media-downloader/ehfdcgbfcboceiclmjaofdannmjdeaoi
* Grab Any Media
http://grabanymedia.altervista.org/
-- TODO: report testing results
* Tellurium TV app is worth a mention