After several requests we decided to provide a free guest account. Now anybody can log in using the credentials guest / welcome123.
Note that this acount is meant only for evaluation purposes so the offered functionality is quite limited.
I am happy to announce that as of yesterday COEL framework is open-source as defined by the standard Apache Licence 2.0.
Check out the code at https://github.com/peterbanda/coel. If you want to contribute to the project contact me at banda@pdx.edu.