#5074
Ubuntu has become bloated and extremely slow (even has started to follow the trend of quickly refreshing the version number, and indulges in this disgusting behavior) for a long time, and its requirements for hardware configuration has far exceed those of Windows now. In other words, running an Ubuntu OS today means making your computer fan spinning at a full jump all the time. The noise of fan alone is painful enough. As a result, more and more people are abandoning Ubuntu, meanwhile increasing lightweight alternatives has emerged and are emerging, and many of them are even able to run smoothly on a USB device, not to mention HDD or SSD. Thereinto, Manjaro is one of the best.

#3122
Since Red Hat published its last one (9th) release (Red Hat Linux 9) in 2003, they decided not to provide free technical support & product certification any more, and fully turned to the development of Red Hat Enterprise Linux (RHEL for short). This made some Red Hat rebuilders (open-source Enterprise Editions, such as White Box Enterprise Linux, Tao Linux, X/OS Linux, Scientific Linux) were born at the right moment. The most active one is CentOS (short for Community Enterprise Operating System).