The successor to the Atari 400/800, the Atari XE line was smaller, had more memory, and had Atari BASIC onboard rather than in a cartridge. Its nearest relative was the Atari 800XL.

The most annoying thing about my grey Atari 65XE was that, unlike the Atari 800, there were only two joystick ports. The Atari 800 had four joystick ports, and each one could accept a pair of paddles, so you could have eight simultaneous inputs.