I like that it's very easy of use with no complicated software or plugins required! It has saved me tons time having all my files organized into folders by category instead just using one folder called "Files". Also being able search through them really fast without needing an external application such as Google Drive (which can be slow sometimes). Nothing at this moment but if you are looking something simple yet powerful then definitely try out UDT because there isn't anything else similar enough compared too its features which include image annotation tools along side other file types including PDFs etc.,.