Wikivoyage - the free worldwide travel guide that anyone can edit.

Ubuntu - Ubuntu is a Debian Linux-based open source operating system for desktop computers.

Triptipedia - Triptipedia is a free collaborative encyclopedia of travel tips, where everyone can browse, save and share tips for better travel!

Debian - Debian is a free distribution of the GNU/Linux operating system.

Tripadvisor - The Tripadvisor mobile app is available for the Android and iOS platforms. It can be used to create reviews of hotels, restaurants, and to chat with other travelers on Tripadvisor forums.

Fedora - Fedora creates an innovative, free, and open source platform for hardware, clouds, and containers that enables software developers and community members to build tailored solutions for their users.