What is the best cloud-based video editing tool?
If you are a professional, you may also like to consider FORscene from Forbidden Technologies. FORscene is a frame accurate logging and editing system which runs in a web browser. It is used for making video for television broadcast and professional websites around the world. It currently handles around 10,000 hours of professionally shot content each week, and around 1,000,000 hours of professionally shot video has passed through the system since its launch in 2004.
There is also a consumer version available, called Clesh.
Depends on what you are looking for. There are tools like Jaycut which offer a feature rich video editing interface similar to Windows Movie Maker. Or apps like Animoto that create fancy mixes for you automatically.
Also check out OneTrueMedia which lets yu mix your photos and videos and add special effects.