libzoneminder-plugin-openalpr is a free, open source Licence Plate Recognition plugin for the ZoneMinder CCTV sofware (https://github.com/ZoneMinder/ZoneMinder). It is based on openalpr library (https://github.com/openalpr/openalpr) for the recognition algorithm and plugin development initiated by nextime (https://github.com/nextime/zum/tree/master/scripts/ZoneMinder).