Packages are officially supported images with pre-compiled languages (ie nodejs and php) or applications (ie Redis and Nginx). This makes it easier and more convenient to execute code without needing to compile your own interpreter(s).
To get a list of currently supported packages, run the following command...
$ ops listBy default, downloaded packages are stored ~/.ops/bin/.packages. If you'd
like to remove a package from your hard drive, whether its to conserve space,
or to force a re-download of the package, you can do it here utilizing the
rm cli tool.