Endeavour 2 is a fully-featured, flexible, and simple overhead projection system designed for churches. It coordinates the display of song lyrics, Bible texts, videos (both saved files such as MPEGs, and external signals such as a camera), and PowerPoint presentations. It allows any text or picture to be shown at a moment's notice, either from a pre-prepared service plan or spontaneously selected 'on the fly', optionally overlaid on a video background.
You can download or request a demonstration copy.
Please note: because of licensing difficulties, the full version of Endeavour 2 is unlikely to be released to the public.