(Free) online video, audio, notation and image editing apps

I’m just a little amazed at these web apps. Qarentia pointed recently to a list of 100 top web apps, and these are the ones that most interest me. It used to be that one had to pay lots of money or at the very least, download, programmes that did what these appear to do. I haven’t checked them out fully yet (this post is kind of a bookmark for me to play with them properly later).

What do you think?