ICQ launched in 1996 as one of the first widely used instant messaging programs, and its short, distinctive notification sounds became part of everyday computer life for millions of early internet users. As files, photos and documents arrived through the program, its alerts signalled something new without needing a pop-up window. Years after ICQ faded from mainstream use, those sounds survived on soundboards and in retro videos, where they now work as instant shorthand for nineties internet culture and dial-up era computing.