Koala is a GUI application for Less, Sass, Compass and CoffeeScript compilation, to help web developers to use them more efficiently. Koala can run in windows, linux and mac.
Gembox.document License Key

Gembox.document License — Key

You're looking for information on Gembox.Document and its license key. Gembox.Document is a .NET component used for creating, editing, and processing Microsoft Word documents (.docx, .doc, .rtf) without requiring Microsoft Office to be installed.

Here's an example: