PHPStorm has transformed the way I code. Whenever I go back to other editors I immediately feel like I am missing something. But, to be honest, everyone has their IDE they love so at the end of the day use what makes you productive.
The fork of Sequel Pro. Great software for working with databases.
A supercharged version of Mac Spotlight.
Great tool for scheduling meetings while protecting my calendar and making sure I still have lots of time for deep work during the week.