Online gambling is a very complex business for the providers as they must offer a wide range of online gambling opportunities unless they are specialist like some of the online casinos and to do this requires some pretty complex software. This software, as far as online casino gambling is concerned, is very complex as there are so many different casino games and the casino software to enable casino slots to spot winners is probably the worst of all but life is made a little bit simpler for the providers as there are specialists in the field. These casino software specialists of which there are really only a handful that control the market are highly specialised companies that enter into arrangements usually though leasing agreements with the online gambling providers. The major players in the online casino software market are Playtech, Wagerworks, Microgaming, Net Entertainment and Chartwell and they are not listed in any particular order of size or importance. You may possibly have noticed if you are a frequent online casino player that some online casinos look remarkably similar to others and in fact they offer the same casino games and the casino slots are all the same as well. This phenomenon is brought about because the online casinos in question use the same casino software so although there might seem to be a great choice of online casino gambling you may find that several of them have identical gambling games. As an exponent of online gambling there is a very good chance that you have never heard of any of the names of online casino software suppliers listed above and in truth there is no reason why you should, what is important is whether you enjoy the experience of online gambling and online casinos in particular and if you do, which software is in use is irrelevant.