Lovely Charts is a web service that allows you to create professional looking diagrams, charts, wireframes and many more online via simple and intuitive drag and drop drawing mechanism.

A fully functional version of Lovely Charts is available for free. But there’s also a Premium Plan for regular, professional users, available for less than 3 euros per month. Professional users enjoy the benefits of exporting the diagrams to pdf format, import your own images/artworks, attach comments to diagram, share diagrams with friends and other interesting features.

To know more about Lovely Charts, checkout this screencast.