YouTube-dl: Open-source YouTube downloader
The tragedy of this software (and many like it) is that despite working exactly as advertised, easily and with a lot of features, because it's a quiet open source project without any SEO rigging it will never appear in page 1 of any searches by laymen trying to download videos ("save youtube to hard drive", "download youtube videos" et al).<p>The amount of crapware I've had to remove from family member's PCs just because they wanted to save a video is ridiculous.