From Sprinx Systems:
Sprinx Meeting Room Planner is designed to simplify resource planning with Microsoft Exchange Server. It displays all resources and their availability, enabling users to find a suitable and available meeting room or other resource in a simple way.
A version displaying all resources, day and week views, with manual date selection and event details is available for free. In addition to this, the paid version allows new calendar events to be created directly from the view, and is fully localized into English and Czech languages.