Authenticator_ciacob is a PHP library to register and authenticate users. It can do open or closed registration, via a master password. User roles are supported. Live authentication can be done by changing session unique ID from one request to another. There is support for password recovery or resetting. It has a built-in hack prevention system that logs a user out when an obsolete session ID is used, or if the IP address changes from one request to another, or when a session lifetime times out. A user is automatically locked out on too many failed login attempts. Locks are IP-based and can be reset by the master. Authenticator_ciacob is easy to configure via external XML files. It is protected against SQL injections by a built-in database traffic encoding and decoding mechanism.
Abacia Event is an event registration and management system that allows you to set up online and offline registration for events (seminars, conferences, expos, training, etc.). The system is very comprehensive. It allows you to register multiple ticket types, meals and other optional purchases, classes that happen concurrently, discounts, tiered pricing, and multiple registrations. Exhibitor, sponsor, and speaker registrations are supported. The exhibitor registration also has a floor plan drawing tool and a way to show the floor plans to the potential exhibitors so they can select their booth(s) and pay for them as well as create a Web page for them and allow attendees to see see the floor plan and schedule appointments with the exhibitor. There are also many other tools and features.