This is a place for links I use regularly or just need to keep in a central place for reference.
Repeater Book – Georgia
Web SDR – Control radios from around the world via the internet
Echolink nodes – Searchable status of Echolink nodes
FCC Amateur License Search – You guessed it…
SE Repeater Association Frequency Coordination – GA, KY, MS, NC, SC, TN, VA, and WV
ISS Detector – The perfect app for Android phones to track the ISS (free to do), and other satellites. I use it exclusively to track the ISS and amateur radio satellites.