Why can't I see the Platform EGO projects after unzipping the EGO plug-in in the Eclipse folder?

Simply unzipping the update site into the Eclipse installation is not sufficient. The plug-ins have to be installed. To install the Platform EGO plug-in, start Eclipse and then do the following:
  1. From the Help menu, select Software Updates, and then Find and Install.

  2. In the Install/Update dialog box, click Search for new features to install. Click Next.

  3. In the Install dialog box, click New Archive Site.

  4. Navigate to the downloaded Platform EGO plug-in location, click OK and then Finish.