Among the best!
Works for most yt videos.
Free version is limited to low-res downloads, unless you get lucky, but that's fair if developers want to make some money in lieu of their investment.

Was working well, but suddenly stopped working recently. Download file is momentarily created but then disappears.

Nice..
saudi-expatriatescom

Actual downloading seems fine, but if you try to access settings through the add-ons page or the drop down on the Youtube video download button, there's nothing, so videos download in the current default folder rather than a specified download folder for this utility, thus 4 rather than 5.

The free version is the best Youtube downloader I have found. I have made a donation just for the free version, if I can also download HD videos I will be really impressed.

It seems that working.
Good tool! :-)

easy to use and fast download

not extremely fast but very good quality

it's good, But sometimes it doesn't work