Ardesia

Ardesia is an oldschool and user-friendly piece of software that can transform your computer's desktop into a digital sketchpad or chalkboard.

Right off the bat, it's quite apparent that this application is mainly aimed at users who are want to enhance their on-screen demos, presentations, or tutorials via colored free-hand annotations.

It also has a built-in screenshot-capture tool, as well as a tool that allows you to video record your activity but only if VLC is installed on your computer's system. You're also provided with the possibility of exporting your work as PDF, and that's about it with the somewhat advanced features really.

It can be deployed on your computer in mere seconds thanks to its streamlined installer, and all of its tools are neatly accessible from an unobtrusive vertical toolbar that sits on the extreme right of your computer's screen.

You're also provided with the possibility of choosing the drawing tool's print thickness, of undoing or redoing the latest actions, as well as selecting custom colors via an intuitive color picker. You're able to change the background, and opt for a couple of built-in drawing tools (pencil, highlighter, arrow, and eraser).

Taking everything into account, Ardesia is surely not what you would call a full-featured application. Be that as it may, it still works great on the latest versions of Windows, it's quite lightweight, very intuitive and it somewhat makes up for its lack of advanced drawing tools with its built-in screenshots capturing tool and PDF export capabilities.