Tredd's Self Storage Software - Version 3.2.2 Fully functional, point and click Self Storage Software for any size self storage business. Add customers, accept payments, create reports, view graphs, automatically print late letters, lien letters, rental agreements, billing notices, password protection, built in database utilities, and more. Units are color coded by their status: unoccupied, damaged, current, past due, or locked out. Shareware version has been configured for 24 units.