Yout is the site you can use if you want to convert a youtube video to a mp3 or mp4, music or video you can download.
SYC 2 is a $20 Mac & Windows application from Softorino, the folks behind the insanely useful and clever WALTR software. Like that software, SYC 2 makes it easy to sync videos/audio from online sources directly to an iOS device without the need to first import them into iTunes.
Fileshifter.io is the easiest way to convert file between different formats. Whether you want to convert images to pdf's or .mov to .mp4 files, we've got you covered. Furthermore, it's completely free and the file limit is up to 1GB, so don't hold back!