OnyX

[Pasquanel]

OnyX is a great cleanup, repair and maintenance utility and it's available here for free! Just be sure to download the specific version for your OS.

http://www.titanium.free.fr/onyx.html​

 

[honestone]

Could not agree more. It has been around for quite a while, has had stellar reviews, and works like a charm. In fact, version 3.2, specifically for use with OS 10.12, Sierra, was released yesterday. I thus only have to wait for TechTool Pro to be upgraded for Sierra compatibility, and I would be ready to upgrade from El Capitan.

However, it has been reported that new models of the MacBook Pro will be coming out near the end of October, and they will require an upgrade for Sierra. So, we should expect to see the first upgrade for Sierra, OS 10.12.1, soon. I am going to wait for it to come out before I upgrade (unless it gets delayed).

 

[Pasquanel]

I'm running 10.12.1 beta now and so far it's been great. I opted to do a clean install this time and noticed a considerable speed increase.

 

[honestone]

I'm running 10.12.1 beta now and so far it's been great. I opted to do a clean install this time and noticed a considerable speed increase.

That's good news! I actually am planning on doing a clean, "virgin" installation of OS 10.12.1 (after doing my last SuperDuper! backup with El Capitan).