Download OmegaT 4.3.1 for Mac from our website for free. The actual developer of this free Mac application is com.apple.jnlp-http___omegat.sourceforge.net_webstart_OmegaT. The application is included in Productivity Tools.
From the developer:
OmegaT is a free translation memory application written in Java. It is a tool intended for professional translators. It does not translate for you! (Software that does this is called "machine translation", and you will have to look elsewhere for it.
You may want to check out more Mac applications, such as Black Omega, Marvel Heroes Omega or Omega, which might be related to OmegaT.