The OpenLayers Editor (OLE) is a set of OpenLayers widgets developed by GeOps http://www.geops.de. The source repository is on GitHub https://github.com/geops/ole. The original set of widgets has been extended (Upload/Download/Text Labels and some more) for use in Heron, but possibly in any OpenLayers app. These extensions are maintained in GitHub as well: https://github.com/justb4/ole as a fork of the GeOps master branch. At the moment (14.mrt.2013) this fork is awaiting inclusion into the master branch. The directory 'client' below contains the OLE client library. It is synchronized via svn:externals from https://github.com/justb4/ole. The SVN link is: https://svn.github.com/justb4/setl The command used to set the svn:externals is: svn propset svn:externals . -F svn-ext-val.txt Use the minimized .js version in your production app.