RDVz is a Web application for setting conveniences for meeting appointments between several persons. RDVz uses a poll system: each invited user votes for one of the dates suggested by the meeting organizer. The poll organizer chooses possible dates, creates the poll, and sends the poll's URL to the participants. The organizer can export poll results in a CSV file. Anonymous access, MySQL, LDAP, and SSO (CAS) authentication methods are available.