Your choice of online casino is very much a personal thing but which casino software is being used by that online casino will have an influence on your enjoyment or otherwise. It may be surprising to some but online casinos do not write their own casino software these days preferring instead to have agreements with one or more of the major casino software suppliers who specialise in the business. Some online casinos may be very transparent about which casino software they use such as All Irish Casino where as soon as you open one of the casino slots it will tell from which casino software company it comes. In the case of All Irish casino it will come from either NetEnt or Amatic Industries . Others are less open but it is usually on the casino site somewhere. This also helps to explain why some online casinos look remarkably similar to each other such as Bet365 casino and BetFred casino or No Bonus casino and Freespins casino. It is not a bad thing that several online casinos use the same casino software as it is the casino software company that looks after the massive casino jackpots that are available and each online casino that uses that software contributes to the jackpot which means that they can build up much faster than would otherwise be the case if only one online casino was contributing. This feature also explains why any online casino is happy when one of their players hits a jackpot as it costs the online casino nothing extra but they are able to publicise extensively that one of their players has won. There are several casino software suppliers apart from the already mentioned NetEnt and Amatic and they include such names as Wagerworks, Playtech, Microgaming and Chartwell all of which are commonly used by online casinos.