tab (stylized as tab) is a diet cola soft drink created and produced by the coca-cola company, introduced in 1963. coca-cola's first diet drink, tab was notably popular throughout the 1960s and 1970s, and several variations were made, including a number of fruit-flavored, root beer, and ginger ale versions. caffeine-free and clear variations were released in the late-1980s and early-1990s.