awesome-mac-apps

is a great way to mass rename files based on predetermined sorting and filtering, as well as complex regular expressions.

allows you to quickly resize windows with hotkeys.

commercial grade file sync. ChronoSync is a nice GUI with some added features on rsync.

is essentially a disk clean up and app un-install utility.

is a utility to clear cache, fix permissions, adjust settings, and optimize OS X.

is a nice compliment to Better Snap and it has a nice grid structure for arranging multiple windows.

records audio from essentially any device.

is a screen recorder with some light duty video editing tools.

lossless audio editing.

is a great way to visualize ideas and brainstorm. A good way to connect the dots.

is an app that will take a webpage and convert it into a layered PSD file.

lightweight web mock-up tool.

another minimalist text editor.

front-end web code IDE.

front-end code compiler, browser refresh, and ready to rock.

is an easy-to-use app to find the precise color of any pixel on the screen.

makes retina ready favicons in a couple clicks.

is a good solution for developing and testing websites on your local machine.

is a great app for running Linux or Windows virtual machines on your Mac.

is a scientific calculator with support for lots of complicated conversions and tasks.

is a great compliment to a spreadsheet program to build predictive models and analyze data sets.