Neat Image is a Photoshop plugin. It will not work with Gimp. The closest equivalent I can think of is wavelet denoise which is included with McGimp. Please give it a try and let us know if it satisfies your needs.

PS: Note that coming from PSE, you will have to get used to some differences between the Apps. This would be true if you went from Gimp to PSE as well.

That is a a script fu so you may already use doesn't require any adaptment to run on mac (except be moved in a gimp script folder)

But if you try to use without reading well http://gimpchat.com/viewtopic.php?f=9&t=3057 you will be deluded:
as example you will not found on the gimp menu, not in any place you would expect.

Well honestly i should do the same (read on that link and or in the commented part of the script) i know that the script should be accessible from the Help menu but even if i know that the script is installed correctly i can't find it in the menu.
(i even try to see if there is some kind of right click help menu (as in the path tool ) butno luck i believe i would never found without reading well the page i linked

Also if i remember well that script has a unusual characteristic , if renamed stop to work

I believe can be a very useful script but it is not something that you may just install and launch hoping you would be able to guess how it work, without reading the instruction is even hard guess how to call it it

BUT again may be installed with no problem in MAC as in win or linux

EDIT

i think i will anyway try to modify the script registration path in Filters/ Script -Fu/ search duplicated script, that the place i prefer for a similar script , just below "refresh script"

PS about Neat image
as partha wrote the wavelet filter is close other similar you will found in the GMIC/Enhancement menu:
Anisotropic Smoothing, Patch smoothing

Thanks to both of you partha and PhotoComix...I'll try it and read the link

2-ton,

I am unable to reproduce this behavior.

Can you check to be absolutely sure you have read/write privileges for your Gimp-2.8 folder?

Thanks,
Partha

I am assuming that this means that I do have the permissions.

different in the size...mine is 240.4 MB and yours is 258.1MB.
mine modified on 6th August and yours 13th August

Am I missing something???

Forgot to add also that I have my GIMP windows separated...I like to see whats happening under the application...LOL...

The strange thing is...Mc Gimp used to be the right size and I could also drag it larger and smaller, longer or shorter, but now I can't. I can only click the upper left green button. That does make it just barely fit, but once in a while i want it smaller than that.

The preferences are saved locally in your Gimp-2.8 folder. I was wondering if you changed something that prevents you from writing or saving to it?

Try this. open the terminal app. When it starts, type . Now start McGimp by clicking on the App. Tell me what you see in the terminal app when you Gimp starts?

Thanks,
Partha