This plug-in has been amazing. I used to have the Google version until it was cancelled by them. VDH kindly switched my license to Firefox.
Highly recommended plug-in.

just easy to use an absolutly funktional .. bravo klapp my hands

Doesn't work on YouTube videos, otherwise works great for me on other websites and does what it claims to do.

Easy to use, fast download

I've been using this recently and it works really well to download some videos embedded to watch offline. Extension works really well. Thanks to the developer for doing life much easier.

I can finally save the video courses and seminars I've bought without problems. Love this extensions!

The best downloader there is

wonderful downloader, extremely fast and reliable :3!!

Super easy to use, many websites can download it

I have been using DownloadHelper for over 10 years and am very satisfied. The donation version, in particular, works excellently.