Xcode hardware IO tools (including network link conditioner): http://adcdownload.apple.com/Developer_Tools/hardware_io_tools_for_xcode_4.4__late_july_2012/xcode44hwiotools6938115a.dmg
Divvy: http://mizage.com/divvy/ Bettertouchtool: http://blog.boastr.net/
Visor: http://visor.binaryage.com/
The basics enable keyboard navigation Add keyboard shortcuts