How do I install the Okapi plugins in OmegaT.app/Contents/Resources/Java/plugins folder (Mac OSX)?
Just drag the files there?
Download the ZIP file of the Macintosh distribution you need (See above).
Extract the ZIP file on any location. For example /Users/admin/Desktop/Okapi.
To run, for example, Rainbow:
Do not confuse Okapi applications with the Okapi OmegaT plugin.
To use the plugin, you only need to download the plugin itself:
The file is named okapi-pluginForOmegaT_all-platforms_0.16.zip.
Just unzip the content into the plugins folder.
Since OmegaT version 2.5.2, there is also a second location for the plugins folder, in [home]/plugins, [home] begin defined as [User Home]/Library/Preferences/OmegaT on Macs.
The advantage is that, since this folder is not within OmegaT.app, you don't have to update it each time you install a new version.