XL series computers, in the Atari 8-bit family (including the 600XL, 800XL and 1200XL)
Weather Star XL (also known as just XL), a computer used by The Weather Channel for local forecasts
Nintendo DSi XL, the fourth and final model in the Nintendo DS line, released in 2009, and a larger version of the Nintendo DSi
Nintendo 3DS XL, the second model in the Nintendo 3DS line, released in 2012, and a larger version of the original Nintendo 3DS
New Nintendo 3DS XL, the fifth model in the Nintendo 3DS line, released in 2014, and a larger version of the Nintendo 3DS XL and New Nintendo 3DS (which is a larger version of the original 3DS)