Microsoft is a technology company that develops and sells computer software and consumer electronics including computers. They make Windows, the world's most commonly used computer OS.
Newegg is an online seller of computer components, electronics, and tech products. They are known for having low prices on these items.
Origin PC is a custom PC company that creates high-end gaming and workstation computers to any specification.
ASTRO Gaming is a maker of headsets and other accessories for hardcore gamers and gaming enthusiasts.
Razer is a premium gaming gear brand, offering peripherals aimed at PC gamers.
Steelseries is a gaming peripheral manufacturer. Their products include headsets, keyboards, mice, and gaming surfaces.