redEVENT.v2 is event system for Joomla 1.5 and Joomla 2.5 and now its free.
With redEVENT you can in a easy and flexible way create and manage events and bookings. redEVENT.v2 is based on redEVENT, but with this version you can take your events to a whole new level.
Along with the options of ex. newsletter integration, dynamical waiting lists and dynamical input options, you also can make payment integrations, repeate events, add or edit attendees and much more.