You also have Galileo and Worldspan which are widely used in flight only pasenger reservations in the UK and worldwide.
Many agents have an in-house adapted version of a CRS to suit their needs. Either way, most are directly linked to the airlines main res system, and will display a max of 9 seats per bookable class of travel.
Worldspan for example has different versions including a simple windows version for basic bookings (point and click), and a more complex version where you type commands into a blank screen to display flight availability (eg: *alhrhkg26jun/ba) and on the more complex version you can build your own fares (subject to the airlines confirmation), print tickets, request wheelchair assistance, seats, extra legroom, special meals etc.... all electronically 'queued' (sent) direct to the airline to reply to the agents computer with a decision/ confirmation.
Oh and you can get weather, horoscopes and recipes too.
I really am a mind of useless information. Right, I'm off to get some serious councelling....
Six
