Equipment Rental - what software do you use to manage your gear?

I am looking for something to help manage our university rental locker - ideally a Mac-based (however I can get a PC for this use) program that would allow us to manage rentals, contact renters (to remind them to return items), and keep a record of past rentals. We also need the software to be a single purchase and not a monthly rental - sounds simple enough, but there are zero reviews out there... so I need your help...Even if it doesn't meet all those parameters, what do you use to manage rentals and how do you like it? via /r/videoproduction https://www.reddit.com/r/videoproduction/comments/4v4ddq/equipment_rental_what_software_do_you_use_to/?utm_source=ifttt