TidBITs reports that Now Software has closed down. Now-Up-To-Date was once the ruling calendaring application for Macs.
Sadly in later years it got known as “Now-Up-Too-Late”, usually by support staff who were trying to fix what had gone wrong for their concierge level customers who were sharing their calendars with their personal assistants.
At least in our shop the transition was thence to PeopleCube’s Meeting Maker, and now to the evil Entourage (which still doesn’t sync shared events properly with iCal for some reason, no handle shared calendars properly, despite Snow Leopard’s claimed compatibility).