One of the advantages of using GPLed software is that anybody who wish to use or modify the code can do so without fear of any repercussions. Ditto for the documentation of the software. This has at times tempted many a book author to release their books under a liberal license and make their efforts available for free in an electronic format.

Source: Linux Kernel in a Nutshell

GRAMPS is the Genealogical Research and Analysis Management Programming System — free extensible personal genealogical software. Its numerous reviews cover the basics of what it does. In this article, I’ll reveal some lesser-known features and tips from the developers’ hideout.

Source: Track Your Ancestors with Gramps