TechSmith Camtasia is and I think will always be my screen capture tool of choice.I love the complex-simplicity of the product but sometimes I just need to create a quick tutorial or screenshot.
I found a website purely by chance and it is an impressive addition to my eLearning editing tool set.
123Apps say they are easy to use, safe, free and run in the browser.
The only downside is that there are adverts running (which is fair enough- you have to make money somehow) which are annoying. That aside from the set of nine editing tools makes this a nice little find !