There are many types of customer management software options out there. I like to keep it simple. I think you need something you can access on the internet and you can touch from your phone or your iPad or from a desktop. It needs to be software that you can easily and quickly update regularly. It also needs to be something that you use. This software needs to be simple enough to utilize your list and actively create more business from your list, rather than just keeping that customer information sitting somewhere on a shelf.