OpenWrt (short for Open Wireless Router) is an excellent open-source embedded operating system based on Linux, and primarily used on home routers to route network traffic. It can run on various types of embedded devices, including CPE routers, residential gateways, smartphones, pocket computers. It is also possible to run OpenWrt on personal computers and laptops.

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.

The ever most widely used and important operating system was Windows 98. Its predecessor is Windows 95, which is a direct successor to Microsoft's prior standalone operating systems MS-DOS and Windows 3.1. As a major milestone of Microsoft's operating system, many of the classic features and designs that Windows 95 first introduced, such as the Start Menu, My Computer, as well as the classic card game - FreeCell, are still in use today.

Amiga Forever is an Amiga computer and operating system emulator suite developed by Cloanto IT srl (developer of Commodore/Amiga software founded in 1986) from Italy and first released in 1997. It enables Amiga software to run on non-Amiga hardware platforms (Windows, Mac OS X and Linux) legally and without any complex configuration.

MOFO Linux was originally designed as one portable and bootable Linux distro (developed on the basis of Ubuntu, can be installed on HDD, USB flash drive, SD card or burned into Live DVD/USB using the included Startup Disk Creator, UNetbootin, or "DD copy method") that can be used on public computers for protecting user privacy. Gradually, it developed into one Linux operating system that emphasizes multimedia, VPN, proxy, file encryption, and disk wiping features.