Apple: Since its origins in 1976, Apple has grown to become one of the most important technology companies in the world. In addition to hardware, Apple is also known for its software, and the good cooperation between the two. This allows the Macbook with less powerful hardware on paper to deliver better performance through MacOS.

Acer: Acer is a Taiwanese electronics manufacturer. It is one of the top five companies in the world in branded PC sales. Acer's products include desktop, laptops, servers and storage, displays, LED TVs, peripherals and e-business solutions for business, government, education and home users. The company also owns the largest computer retail chain in New Taipei, Taiwan.

Asus: Asus is a manufacturer of computers (laptops and desktops), smartphones and components for computers. Asus is often at the forefront of applying new technologies. The company also makes many motherboards for various processor manufacturers, but especially for Intel and AMD. In addition, Asus also manufactures video cards (usually with chips from NVIDIA and AMD). That's why they also make a lot of gaming laptops.

Dell: Dell is an American computer manufacturer. In addition to manufacturing laptops (of which they are one of the largest in the world and the market leader in the United States), Dell also manufactures servers, workstations, networking hardware, PDAs, software, televisions, monitors and printers.

HP: HP (short for Hewlett-Packard) is one of the largest American technology companies and had 300,000 employees in 2014. HP is a manufacturer of laptops, desktops, workstations, monitors, accessories, printers, and scanners.

Lenovo: Lenovo is a Chinese maker of computer hardware and consumer electronics. The company is China's largest computer manufacturer and has the largest market share in the world. In addition to PCs and laptops, they also make photographic equipment and mobile phones.

Toshiba: Toshiba is a Japanese electronics company. It ranks among the world's top manufacturers of electrical and electronic equipment, and Japan's largest semiconductor manufacturer.

Sony: Sony Corporations is a Japanese company primarily active as a manufacturer of consumer electronics. In addition, Sony also produces many computer games and game consoles. Sony has grown from 20 employees to currently more than 146,300 employees.