![things-cultured-code-to-do-application things cultured code to-do application](https://www.ridiculouslyefficient.com/content/images/content/v1/56ad0eb962cd942d9e46f366/1454986232091-CGAI3WQNNHE3DIXM9WAO/mzl.tlpyhzvb.800x500-75-600x375.jpg.800x500-75-600x375.jpg)
I've used Things ($49.99, Mac App Store) as my No. 1 to-do application since 2009 and see no reason to stop.
Quick Entry keys let me open a new to-do on the fly, while the Autofill feature automatically inserts a hyperlink to the document, email, photo or website that's active at the moment. Tags keep to-dos fully searchable, while Projects and Areas keep them organized.
Things also syncs with iCal and my iPhone and iPad. A cloud sync solution is currently in beta testing.