As of 2020, MRIcroGL is a good replacement for MRIcron.

Installing

Download the latest version from Chris Rorden's g ithub site (or just google; the NITRC site will probably come up).
Unzip the file
Create an "MRIcroGL" subfolder in your "C:\Program Files" folder (or "C:\Program Files (x86)" if you are running 64-bit Windows)
Copy the unzipped files into this subfolder
Right-click over the "mricrogl" executable, "Send to", "Desktop (create shortcut)"
I like to associate nifti files (*.nii, and maybe *.gz if you have lots of *.nii.gz compressed nifti files) with either MRIcroGL or (previously) MRIcron

Connecting to CSPM

Seeing what's possible

The best way to see what it can do is via the scripting examples. All of these functions can be done through the GUI.

Creating 3D files

In MRIcron, you can export the current image as displayed, including contrast settings, blobs, etc.: "Draw" menu, "Advanced", "Export as RGB". This creates an "*.nii.gz" file, that mricrogl can open. Note that you cannot change the blobs or contrasts of the exported file.

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