NavAv.net is a scheduling program that organizes events and collects member availability. It currently has over 200 regular active users.
NavAv was developed to automate the job of finding out who would be able to participate in scheduled events at my job with the Navy Reserves. It allows users to manage their commitment to events, and change their responses easily before a deadline. It also sends out reminder emails, and keeps track of attendance.
Visit here: NavAv.net