Those of you who play casino games at more than one online casino will have noticed that many of these games look very similar and in fact can be identical in layout and content. The reason for this is that online casinos do not produce their own software to run their sites, preferring to use one of the specialist casino software companies. There are currently four main online casino software companies who between them cover almost all the major casino sites we are likely to use. These top casino software companies are Microgaming, Wagerworks, Playtech and Chartwell, and for those interested in knowing a bit more about them we have put more details on our casino software page. To illustrate the power of these software providers, William Hill, Betfred and Bet365 all use Playtech as their software provider and when you look at these online casino sites you will see that they are almost identical except for the branding, and for the most part offer the same casino slots. Some online casinos will use more than one software supplier, with perhaps the main casino games such as poker and roulette being run by one supplier and the slots by another. It is worth noting that it is the casino software companies who negotiate any copyrite deals with the big entertainment conglomerates who own some of the characters or television shows they use as a basis for their slots games. At first glance it is tempting to accuse the online casino operators of being a little lazy in opting to use these same software suppliers, but when you realise that our personal data protection and security is also a function of the online casino software you begin to understand just how important the choice of software and the software supplier is for all of us.