There have been some articles in the casino news about some online gambling operators being behind others when it comes to online offerings but as far as online casinos are concerned they all seem to use one of a small number of casino software suppliers. Online casino software is a very specialised business so instead of online casinos trying to develop their own software they tend to have arrangements with one or more of the likes of Microgaming, NetEnt, Playtech, Chartwell or Wagerworks who are the top casino software suppliers and then badge everything with their own brand. If you use more than one online casino you may very well have noticed that there are a great many similarities between them; for example Bet365 casino and BetFred casino are very similar even offering the same casino games and All Irish Casino and No Bonus casino both use NetEnt casino software making them also very similar. New casino games are being developed all the time particularly in the area of casino slots and this sometimes becomes a competition to see which of the online casinos can have it online first but it probably depends on who pays the most money to the casino software supplier. The fact that several online casinos use the same casino software is no cause for concern and indeed it can work to your advantage when considering slots jackpots. Progressive jackpot slots are generally controlled by the software supplier rather than any individual online casino and the jackpot is built up over time by very small contributions from each spin of the slot so the more online casinos that use a particular casino slot, the faster the jackpot increases. This also goes some way to explaining why online casinos always seem happy when somebody on their site wins a large jackpot as in fact it costs no money but they can claim the publicity.