YouTube DOES NOT WORK !, wrote several times no reply, re-verified paid license key no help.

best downloader , i love its sidebar for downloading large number of videos

Used to work great up until a week ago. Doesn't work at all now.

Полезность сложно переоценить

Лучший впн, лично для меня, я из России.

O DownloadHelper, é muito bom atende plenamente as minhas necessidades.

Superb! Amazingly useful and great design. One of the best add-ons available anywhere. Thanks so much to the developers.

ça marche plutôt pas mal du tout. L'ergonomie est plutôt bien. ça prend pas trop de place dans la barre, et le choix des formats à la sauvegarde est très bien.
Après selon les sources, il faut parfois régler le format dans la vidéo pour avoir le choix de le sauvergarder. Et parfois non.

If there's a better downloader, I haven't found it.

Total waste of time unless you are willing to pay for their premium, the add-on simply doesn't work for YouTube currently unless you go out of your way to install the beta version, then in order to download it they make you install something else too, then finally they notify you only after downloading the video that "oh sorry we forgot to tell you we want your money so here is a QR code watermark that takes up 20% of the videos screen. LOOK ELSEWHERE.