Bumblebee Instrument Management System

"Bumblebee is a system for managing instruments and other resources (e.g. analytical equipment) that must be shared between a number of users. Bumblebee is designed to be more efficient than a calendar on the wall or a whiteboard for both users and administrators. Bumblebee is also able to generate reports of resource usage with breakdowns by user, research group and research project. (more ยป)

Bumblebee is highly configurable, with the operational parameters (such as the timeslots that it is available) configurable for each instrument. The permissions of each user and the rate charged for each project can also be individually configured. Usage reports and invoices can also be generated in a variety of formats including CSV and PDF."

http://bumblebeeman.sourceforge.net/