Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.
UIKit - A lightweight and modular front-end framework for developing fast and powerful web interfaces
PHP Event Calendar - PHP event calendar script with multiple views and many customizing options.
Kendo UI - Fast, light, complete: 70+ jQuery-based UI widgets in one powerful toolset
The Receptionist - The Receptionost is a visitor managemnt solution that has visitor logging system to track visitor traffic.
JQWidgets - Unique toolkit for HTML5 Web development