Cold Turkey - Cold Turkey is a free productivity program that you can use to temporarily block distractions so that you can get your work done!
ServerSuit - ServerSuit is a browser based program that enables remote Linux administration, monitoring, website hosting, and server setup automation.
Time Sink - Time Sink helps you track how you spend your time on your Mac.
Nagios - Complete monitoring and alerting for servers, switches, applications, and services
Anti-Social - Anti-Social is a productivity application for Macs that turns off the social parts of the internet.
RedGate SQL Monitor - SQL Monitor helps you and your team find issues – before they become problems