A free solution from Interactive Whiteboard/Table developers Promethean, ClassFlow is their latest teaching software available on desktop and online in the cloud.
The solution allows you to design and manage various presentations (known as Lessons) through either application with the ability to make activities (such as quiz questions) and make use of free and paid resources from teaches around the world. The system ideally relies on a teaching device (or Trust PC with a web browser) and BYOD (laptops, tablets and/or phones) for students and the pace is controlled by the teacher. For those that prefer to teach without slides or require an impromptu surface to write on, an instant whiteboard facility is also available with the ability to save or erase as necessary.
If you're interested in ClassFlow and would like a demo or advice on how to get started with using it in your teaching sessions, please contact Ed Tech Services here.