Pixa

Based on the Windows Presentation Foundation (or WPF), Pixa is a vector editing program that comes packed with a few basic tools.
The tool allows you to paint geometry objects. Therefore, you can zoom in and out, as well as resize images without them receiving any damage regarding quality.
This is a portable app. In other words, Pixa does not require installation; you can save the tool on an removable device (like a USB flash drive), store it on any computer and directly run its executable file. Plus, no modifications are made to the Windows registry.
The application is wrapped in a clean and stylish interface where you can start a new project by specifying the name, size, measurement unit and DPI of the document. All projects can be saved with the PIXA format.
So, you can use a drawing tool and apply various colors, create styles and palettes, add brushes and layers, as well as use basic functions, such as undo, redo, cut, copy and paste. Furthermore, you can zoom in and out, as well as work with a selection tool.
The drawing program runs on a moderate amount of CPU and system memory, is pretty responsive and supports keyboard shortcuts. We have not come across any difficulties throughout our testing; Pixa did not freeze, crash or pop up error dialogs.
On the other hand, there is no help file available and the app has not been recently updated. It comes packed with limited features but can be easily handled by inexperienced individuals, thanks to the intuitive layout and overall simplicity.