The Geronimo Eclipse Plugin (GEP) v2.1.0 can be installed using the following options:
Install GEP Using WTP
The GEP can be installed directly from within WTP while defining a server runtime. Follow the steps below to install GEP:
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Download the GEP 2.1 from http://wwwarchive.eu.apache.org/dist/geronimo/eclipse/2.1.0. Close Eclipse if it is already running. Extract the archive to <eclipse_home>. Launch Eclipse by running <eclipse_home>/eclipse.