These links to external websites may be of interest.
Client Service Tracker is a Microsoft Access database that also uses Microsoft Excel. You must have a Windows computer that already has Access and Excel installed.
For the specific versions needed of these products, see the Technical Requirements page.
This is the real software, only it is limited to 15 person-records. Download the demo, work through the tutorials, put in a few of your own clients, and see how it would work for you.
Go to the free Demo software page.