Mac: Fantastical 2 is a powerful (but pricey) calendar app for Mac, and today it's getting a lot better for business users with complete support for Exchange servers. Alongside that, it comes with a handful of new features for everyone else. The big news here is the support for Exchange. Since most big businesses use Exchange, that kept a lot of people away from Fantastical since all you could do previously was look at your calendar. Exchange users can now do everything you'd expect to do, including responding to event invites, look up availability of your colleagues and find contact info. The same goes for Google Apps integration as well. For the rest of us, the update adds in some other solid new features, including the ability to print calendars, get notifications for shared iCloud calendars, the option to choose which day or week the month view starts on and multiple item selection. As always, if you're not sure about dumping the $79.99 on Fantastical, you can check out a 21 day trial from the developer's site.
Fantastical ($79.99) [Mac App Store]