The Best Casino Software Providers of 2026

More than 100 developers are constantly developing new video slots, blackjack variations, roulette games, and live dealer games at non GamStop casinos. The development studios approach this with varying degrees of skill. However, it's worthwhile to identify the best online slots not on gamstop beforehand. Why settle for mediocre slots when the top games are just a few clicks away?
Below you'll find a preview of the 10 best online casino providers, including recommendations for slots you absolutely should try.

NetEnt

NetEnt is a long-established online casino provider from Sweden. The company has been developing online slot machines since 1996. NetEnt – formerly known as Net Entertainment until 2015 – now employs more than 1,000 people. In addition to slots, NetEnt offered live dealer games for a time. However, these disappeared when Evolution Gaming acquired NetEnt in 2020. While the loss of the live games is regrettable, this acquisition impressively demonstrates NetEnt's high standing in the industry.

Among the most successful NetEnt slot machines are Jack Hammer, Twin Spin, and Narcos. Although these slots were released some time ago, they dominate the top games in non GamStop casinos. NetEnt slots were ahead of their time – and for that reason, they are still worth playing today.

Table games and progressive jackpots are also part of the developer's portfolio. With Hall of Gods and Arabian Nights, NetEnt creates new millionaires every three to four months. Medium-sized jackpot slots like Jumanji and Fruit Shop Megaways are also included in the selection.

Play'n GO

The Swedish-based development studio Play'n GO was founded in 2005 and has already amassed a considerable portfolio. The online casino provider possesses the invaluable talent of copying existing slots and graphically enhancing them. Legacy of Dead is one of Play'n GO's most famous games – and essentially an exact replica of Book of Ra. Other Play'n GO slots, such as Tome of Madness and Book of Kings, further develop the formula of these "book" games.

Besides 5-reel slots, Play'n GO also excels at cluster slots. These slots use a grid reminiscent of Bejeweled or Candy Crush. The goal, as in those games, is to form groups of matching symbols. Gemix is one of the best-known examples of the genre; anime fans will find plenty to enjoy in Kunoichi.

Push Gaming

Push Gaming is an unassuming casino game provider that many casino game fans aren't aware of. This is partly due to its game portfolio, which comprises barely more than 20 video slots. The development team places great emphasis on gameplay and attractive visuals. While some manufacturers churn out slots like on an assembly line, Push Gaming's slot machines are created through meticulous, handcrafted work.

One of Push Gaming's most popular slots is the cluster slot Jammin' Jars 2. The eponymous jam jars occasionally appear as Wild symbols on the reels. Whenever Wilds complete a winning combination in Jammin' Jars 2, their multiplier increases. This leads to extremely high wins, especially during free spins, because the Wilds don't disappear. Other top slots from this provider include Big Bamboo, Mad Cars, and Retro Tapes.

Novomatic & Novoline

The history of Novomatic AG began in 1974 as an operator of slot machines. In fact, the company took a long time to recognize the advantages of online slots. Since the 2010s, the casino provider Greentube has been adapting Novoline games for non GamStop casinos. So, if you see the name Greentube next to Book of Maya, Ultra Hot Deluxe, or Queen of Hearts Deluxe, Novomatic is behind it.

The most famous Novoline game – Book of Maya – made book-themed slots socially acceptable. No one expected this slot machine to unleash such a wave of popularity. What distinguishes Book of Maya and its successors is how close you come to hitting a full screen of symbols during the free spins.

The card gamble feature in Novoline games allows you to increase your winnings. The game works similarly to roulette: you choose red or black, and the color of a hidden card decides the result. A correct guess doubles your winnings, while an incorrect one results in a loss. Other software providers like Play'n GO have also adopted the card gamble feature.