Oldest software system in continuous use
I'm skeptical because Guinness World Records is a marketing agency masquerading as a ratings house / record keeper.I googled "oldest software still in use" and the rest of the internet think it's MOCAS, the USA DOD contract management software, launched in 1958, two years earlier than Guinness' earliest guess for either of its options mentioned in the article: https://fossbytes.com/mocas-worlds-oldest-computer-program/Sorry to be "that guy" but I'm just really cynical about Guinness and records in general. Plenty of their records really are just fun, and I can't find a profit angle for this article for either the IRS or whoever manages SABRE, so I guess I'm just being a snark.