This is a bit of a cheat since I know that the administrative interface is being rolled out soon. It will use Bootstrap and jQuery to take advantage of many features which were not available when ParkAdmin (OPS-COM) was originally developed.
Feel free to vote, but please also consider leaving some comments about areas you feel could be improved.
As a side note, the user interface is available in two flavours. One is the old HTML version which looks like it was created in 1990 ick! and the newer mobile ready version which is in use by most clients.