#1) Gmail - expireds and pre-foreclosures that I have NOT spoken with yet but to whom I'm trying to reach out and make that initial contact go into gmail. I just reverse look up their info, and email it to myself. Then I use filters to help me contact these people multiple times at different times of the day.
#2) Realty Juggler - once I get these people on the phone for the first time, I transfer their info into Realty Juggler and start the "real" follow up.
Knowing the data you need to support your business goals and strategy will prove essential.
That means you must be able to answer the question, "What do you want your database to do your your?"
Some use Outlook or an spread sheet.
Others reach for the shiny things and pay Top Producer.
Budget concsious folks love REATLYJUGGLER.
I use WiseAgent.com