Kiwix
Kiwix is a free and open-source offline web browser created by Emmanuel Engelhart and Renaud Gaudin in 2007. It was first launched to allow offline access to Wikipedia. But it has expanded to include other projects from the Wikimedia Foundation as well as public domain texts from Project Gutenberg. It is available in more than 100 languages. Kiwix has been included in several high-profile projects, from smuggling operations in North Korea and encyclopedic access in Cuba to Google Impact Challenge's recipient Bibliothèques Sans Frontières.