debian is an operating system and a distribution of free software. it is maintained and updated through the work of many users who volunteer their time and effort.

news and feature lists of linux and bsd distributions.

an innovative platform for hardware, clouds, and containers, built with love by you.

linuxquestions.org offers a free linux forum where linux newbies can ask questions and linux experts can offer advice. topics include security, installation, networking and much more.

ubuntu is the modern, open source operating system on linux for the enterprise server, desktop, cloud, and iot.

red hat is the world’s leading provider of enterprise open source solutions, including high-performing linux, cloud, container, and kubernetes technologies.

q&a for ubuntu users and developers

sourceforge provides free & fast open source software downloads and development, and business software reviews and comparisons featuring the largest open source and business software directory.