The Mac OS is a different animal than windows so maintaining it is also a bit different. For example, most places you look will tell you that there is no need to defragment your hard drive when running on a Mac. I remember reading something years ago about how there are some routines you can run to help tidy things up a bit. A quick google search took me to this excellent resource called “the x lab“. [http://www.thexlab.com/faqs/maintscripts.html] I tend to steer away from additional software if possible so my preferred method is “The Terminal Way”. The article provides the instructions and the reasons why you should perform this maintenance.