Organising events such as conferences, training/courses or a workshop can be a complex exercise: communication, coordinate people or volunters, administer payments and registration and the practical arrangements at the door with badges, lists and cancellations. CiviCRM supports all these activities. It uses your contact data and a seperate module that documents the event, the cost, registrations and location details for you. The integration of this with your website for publication and registration can be easily set up. The administration of payments can be integrated with a number of payment providers such as  Paypal, creditcard companies or iDeal and Bancontact.