Plugins are small programs that work with the GUS application to load data. See the Developer's Guide for more information about the Plugin API and writing plugins. GUS comes with two types of plugins: Supported and Community. Supported plugins have been tested in both Oracle and Postgres and have been confirmed to work properly, are portable across any site with a standard GUS installation, and widely useful, and meet the plugin standard outlined in the Developer's Guide. Community plugins are provided as part of GUS as well, but they fail to meet at least one of these criteria and they should be reviewed prior to use.