The best I've found so far

Positive Review by mazzly
about Mar 2016

This is definitely the best video downloader site I've found so far.. No need for installing any sketchy apps or plugins that have the risk of containing malware and viruses.

Works with all services and they have the awesome trick where you can just add "dl" in the url and click enter (e.g. / / / etc).

Also works without any problems on android

[Edited by mazzly, March 16]