“The Mac has a wealth of information managers from the simple MoosePad to the full on relational database, Filemaker. For me, the one that offers the most power without building my own database is DEVONthink Pro. DEVONthink Pro is flexible, feature-rich, and extensible (via plug-ins, AppleScripts, and Automator actions), but its interface is clean and intuitive. Well, it’s sort of intuitive as it a lot of potential that I hadn’t thought to use at the “intuitive” level.”