other than windows one? for online, what i know of is for the animation one. it's powtoon, moovly & goanimate. Goanimate requires premium acc if you wanted to download the video.. for moovly, idk. but powtoon, you can upload your video to your youtube acc then download the video thru youtube via any software downloader you have if you wanted to download it.

Movie Maker.
Idk any online, what I know is that you are supposed to download them. Movie Maker should be on your PC already.