If you are comfortable with adding mods and/or cc to your game, there is
Nraas NoCD. Which basically does as it says. There is also a post
here, with instructions on how to use it, and how to
by-pass the launcher on mac.
If you have never installed CC or Mods on your game before, I found a
video with visual directions on setting up your game to run mods, or you can follow these written instructions taken from that video:
Open Finder and click on applications, choose "The Sims 3" and right click, (or control click for a one-button mouse) and select "Open Enclosing Folder", right click again and select "show package contents" click on contents> resources> transgaming> c_drive> program files> Electronic Arts> The Sims 3>, click on "New Folder" and create one called Mods, create another folder inside called Packages. Inside there, you will store your mods. Only .package files! Nothing else.
To get the game to see/use the files, you will need a resource.cfg file. There is a link to one in the description of the video, but to make it easier:
here, and maybe
here if you don't trust that one.
You will need
Keka to extract the file, if you do not already have it or another extraction program.
As for downloading the patches directly, I found you a link to a
super-patcher for mac, and instructions to do so after further reading. I hope this helps, and sorry for the slow reply!
