Best Online Casino Software

There is a long list of online casino software companies on the market today, but here at CasinoTopsOnline we have chosen to review only the largest and the best makers of online casino games. The leading online gaming software developers are Microgaming, Playtech, NetEnt and Realtime Gaming. Below you’ll find all top-rated casino software companies on our site. You can also see detailed reviews and find online casinos powered by the world’s best eGaming software providers.

  • Pragmatic Play Casinos
    Pragmatic Play, a software developer that puts simplicity first. Although not a veteran of the online casino industry as it was launched in 2015, Pragmatic Play has managed to become one of the leading manufacturers in the market.
    Play Pragmatic Play Casinos
  • Hacksaw Gaming Casinos

    Find out one of the best gaming provider out there! Hacksaw gaming is one of the best slots provider out there, and you should try its games right now. Find out our exclusive review and all the casinos with these games.

    Play Hacksaw Gaming Casinos
  • Cryptologic Casinos
    Cryptologic is one of the oldest software providers in the online gambling industry. Cryptologic was sold to Amaya Gaming in 2012 which is one of the largest service and products suppliers for top online casinos.
    Play Cryptologic Casinos
  • NextGen Gaming Casinos
    NextGen Gaming constantly strive with a single core question "What makes a great game?", and with this laser-sharp focus at the core of their development it is no surprise they are excellent at producing great online casino games.
    Play NextGen Gaming Casinos
  • Red Tiger Casinos
    Red Tiger Gaming is one of the hidden gems in the online casino industry. The company was founded in 2014 by a group of industry veterans which only makes them more recommendable.
    Play Red Tiger Casinos
  • StormCraft Studios Casinos
    StormCraft Studios is an independent software provider under Microgaming and specialise in creating high quality and engaging online slot machines. Launched in 2018 they take online gambling by storm.
    Play StormCraft Studios Casinos
  • RabCat Casinos
    Originally set up back in 2001 in Vienna, Austria, RabCat specialised in creating beautifully crafted games in all shapes and sizes. Check out one of the most discussed gaming provider on the gaming scenes and get the most out of our free plays. Ready to enter the game?
    Play RabCat Casinos
  • Novomatic Casinos
    Novomatic is the Europe’s largest and most innovative group of companies in the global casino industry. Online gamblers are now able to enjoy exclusive Novomatic Greentube slots as well as Skill games like Belote and Ski.
    Play Novomatic Casinos
  • Fugaso Gaming Casinos
    Fugaso Gaming is one of the most respected software provider in the industry with expertise in game development, software integration and white label services.
    Play Fugaso Gaming Casinos
  • Ganapati Gaming Casinos
    Combining Asian themes into Western gameplay, Ganapati is able to publish top-shelf gaming solutions rivaled by next to none. Let's have a look at some of the Ganapati top-notch slots, with some free play and dedicated bonuses.
    Play Ganapati Gaming Casinos
  • Best Playtech Casinos
    Playtech has become one of the most renowned online gambling providers used by the biggest online casino brands in the world. Playtech casinos feature a complete range of games from Marvel slots to progressive Baccarat.
    Play Best Playtech Casinos
  • ELK Casinos
    There are very few game studios with the same passion for games as ELK Studios has. This small independent software developer from Sweden is responsible for some big title out there. Using their creative dream team, ELK Studios is able to publish beautifully crafted slot machines, some of which have even won awards of the past few years.
    Play ELK Casinos
  • iSoftBet Casinos

    In order to excel in something, you first need to master the basics. iSoftBet is a software studio that has mastered the basics and have gone above and beyond in creating visually stunning slot machines. Aside from being a treat to the eye, iSoftBet also take responsible gambling very seriously.

    Play iSoftBet Casinos
  • Yggdrasil Gaming Casinos
    The name 'Yggdrasil' is in essence akin to the ‘Tree of Life’, which brings great good to the world. The aptly named gaming company gives the strong sense that only good things can come out of their house. This is good news for the video slots arena.
    Play Yggdrasil Gaming Casinos
  • IGT Casinos
    IGT is the world’s largest slot machine manufacturer and land-based casino provider. IGT software is most popular for its wide range of incredibly recognisable IGT Slots; games like Cleopatra, Wolf Run and many more.
    Play IGT Casinos
  • Evolution Gaming Casinos
    Evolution Gaming is the world’s leader in B2B Live Casino Operations. Through their services you are able to join multiple gambling piers for live hosted gaming in actual land-based casino facilities, and with real life dealers.
    Play Evolution Gaming Casinos
  • Play'n GO Casinos
    Established in 2004, Play’n GO have created a large range of almost 70 high-quality games tailored to suit just about any market. All games by Play’n GO are instant play games and are available in 30 different languages.
    Play Play'n GO Casinos
  • Nektan Online Casinos

    If you have been around the block a couple of times within the online casino world, then chances are you have played at casino owned by Nektan. This Gibraltar-based company is responsible for over 100 different casino sites, all with their own unique theme and qualities. Nektan casino are especially favoured by players based in the United Kingdom, but gamblers from Canada and Europe are more than welcome to try these brands out for themselves.

    Play Nektan Online Casinos
  • Habanero Gaming
    Habanero Systems is one of the most interesting software developers in the industry. Their take on the development of their games and growing their business is unique and sets them apart from most other online casino gaming developers.
    Play Habanero Gaming
  • EGT Casinos
    Euro Games Technology, also known as EGT, is the largest land-based casino supplier in Eastern Europe and beyond. EGT has a wide spread of player favourite games such as 5 Dazzling Hot, 40 Super Hot, Rise of Ra and more.
    Play EGT Casinos
  • BetDigital Gaming Casinos
    BetDigital is a game provider and software provider company based in the UK and the team behind it have over 50 years experience in the field. Their games are very cool to play and easy, good for new and veteran players.
    Play BetDigital Gaming Casinos
  • Push Gaming Casinos
    Push Gaming is one of the first game studios to fully focus on providing fully integrated mobile casino games across all devices. Founded back in 2010 by James Marshall and Winston Lee.
    Play Push Gaming Casinos
  • Ash Gaming Casinos

    As one of the more prominent British iGaming companies, Ash Gaming probably holds much more ground in the United Kingdom than it does anywhere else. Basing itself out of London, England, the brand has probably become best known for its RNG online slots, and these don’t often go unnoticed thanks to the inclusion of wonderful bonus rounds and impressive mechanics. It may surprise you to find out that Ash Gaming has actually been operational since 2000. Therefore, it brings quite the lengthy history to the forefront, especially when it comes to the manufacture of next-generation slots.

    Play Ash Gaming Casinos
  • GiG Games Casinos
    Gaming Innovation Group has made it its mission to get shit done (excuse our French) and since their start in 2008, they have done nothing but surpass everyone’s expectations and grow exponentially.
    Play GiG Games Casinos
  • Amaya Casinos
    Online casino gambling is one of the biggest sources of entertainment nowadays, for some it has even become a profession to play games of chance and win. The success and growth of online casinos depend on the amount of quality games.
    Play Amaya Casinos
  • NYX Casinos
    NYX Gaming is part of SG Digital and takes care of integrating high-end casino solutions such as lottery games and sports book. They are the backbone of the company is terms of technology and back-office integrations.
    Play NYX Casinos
  • Scientific Games Casinos
    Scientific Games has got to be one of the largest, if not the largest game providers in the online casino world. Small and big companies alike aspire to Scientific Games due to the quality and consistency it maintains through every game it releases.
    Play Scientific Games Casinos
  • Aristocrat Casinos
    Aristocrat remains an industry leader when it comes to casino entertainment and Vegas slot machines. Aristocrat online casinos offer some of the most exciting Vegas Slots of all time, including 50 Lions, Miss Kitty and more.
    Play Aristocrat Casinos
  • Thunderkick Casinos
    Relative newcomers to the online slot development world, Thunderkick, have taken 2014 by storm. Their slots can be described as cutesy, quirky and pure fun. The founding members of Thunderkick are all hailing from NetEnt!
    Play Thunderkick Casinos
  • Big Time Gaming Casinos
    If there is one software provider that prides themselves with being innovative then it is Big Time Gaming. This software provider has set up shop in 1996 under the original company name New Tech Media in Australia.
    Play Big Time Gaming Casinos
  • Betsoft Casinos
    If you’re looking for innovation, excellence and top quality gaming then Betsoft is the perfect choice. Some of the most cutting edge and popular 3D online casino games have been created by Betsoft Gaming.
    Play Betsoft Casinos
  • Realtime Gaming Casinos
    Established in 1998, Realtime Gaming, or simply RTG, online casino software has seen tremendous growth and expansion over the past fifteen years as RTG casinos are known for offering the fastest and most responsive games.
    Play Realtime Gaming Casinos
  • WMS Casinos
    WMS is one of the world’s oldest and largest companies in the casino and gaming industry. This software is well known for its incredibly popular Vegas Slots including Zeus, The Wizard of Oz, Bruce Lee and many more.
    Play WMS Casinos
  • 1X2 Network Casinos
    1X2 Network has been around since 2002 and has built a network of subsidiaries to strengthen its position in the gaming industry, developing the whole range of betting products, including casino, sports, poker and lottery services.
    Play 1X2 Network Casinos
  • Merkur Gaming Casinos
    Merkur Gaming is the international arm of the Gauselmann Group from Germany. They are a reliable international business specialising in the development of amusement machines and casino operators, with a multi-faceted gaming profile.
    Play Merkur Gaming Casinos
  • Microgaming Casinos
    Microgaming is the world’s largest and the best online casino gaming software providers. Microgaming currently offers over 850 casino games and guarantees at least 2 new titles every month. Microgaming casino sites are some of the best-equipped sites for a fantastic casino experience.
    Play Microgaming Casinos
  • Blueprint Gaming

    Blueprint Gaming is a premium content provider for online slot games based primarily in the United Kingdom. Owned in part by the Partially owned by German-based Gauselmann Group, their offering of games explores the provision of exciting video slots, 3D slots and Scratch Card games for the online and mobile gambling markets. 

    Play Blueprint Gaming
  • Quickspin Casinos
    Quickspin is one of the fastest growing casino software providers. With their player first mentality, you are ensured of a top of the line experience across all platforms. You will be in for an unforgettable experience.
    Play Quickspin Casinos
  • All Netent Casinos & Slots
    Net Entertainment, or simply NetEnt, is an Award-winning software in the online casino industry. Online casinos that feature NetEnt games have become a top choice for gamblers. 
    Play All Netent Casinos & Slots
  • Just for the Win Casinos

    When playing online slots, you are playing for one goal only: to win. Just For The Win has this concept at the heart of their games by making visually-appealing slots on which players can gamble their hearts out.

    Play Just for the Win Casinos

Top Casino Software Providers

Over the course of the past years, more and more independent online casino software providers have popped up. Not only because the industry was demanding more new games, but also to give the players more variety in games. As online gambling surges in popularity, players want more and more options.

So the game developers and gaming operators rose to the challenge. Microgaming was the first provider to take matters into their own hands and started to create high-end casino games of all shapes and sizes. Afterwards, many other companies like Net Entertainment, Play'n Go, Yggdrasil Gaming and Thunderkick followed suit.

Now, we have plenty of options with each provider specialising in a slightly different game offering. Some create games which are dependable and easy to follow, and some of them create games which are exciting with new mechanics at every turn - some even going so far as to create a classic video game experience with gambling offerings! We've dived into the world of online providers to see what each one offers, and what to look for when it comes to finding the right one for you.

With a healthy amount of competition amongst these software provider giants, they have managed to keep casino gaming exciting and dynamic. When looking at the amount of progress in technology and software development, casino games have really come a long way. 

From 3-Reel Slots to Video Slots

From simple 3-reel slot machines built with Flash software, to modern video slots on HTML5, things have changed. Not only have the games become more graphically advanced in terms of animations, artwork, and soundscape, but also the way they are played. Good software providers make sure that their games are filled with exciting and thrilling gameplay features that add an extra dimension to their games. On top of this, the switch to HTML5 has made games available on many operating systems meaning that there is no difficulty running them on a phone as well as a desktop computer, for example.

We see new features pop up with almost every well-made slot. So far we have seen a continuous evolution, with new features like different variations on Wild Symbols, Scatter Symbols and different reel systems like “Avalanche modes” and “Tumbling reels”. 

When it comes down to choosing the best providers, here at CasinoTopsOnline we can help you on your way by giving you our favourite game developers. 

  • Microgaming:  has changed the online gaming sector for the better by providing operators and players alike with the best games. Over the years this innovative and agile software developer has put their mark on the map and raised the bar when it comes to the quality of their games. Recently they have expanded their portfolio with the launch of their independent software branch: StormCraft Studios. Continuing to expand on their territory and never refusing any challenge, Microgaming truly deserves a spot in our top casino software providers. 
  • Net Entertainment: come in at a close second - perhaps you will know them better as NetEnt for short. NetEnt is one of the reigning software giants in the online casino industry. They have published crowd favourites like Gonzo’s Quest, Jack and the Beanstalk and of course the hit slot machine Starburst. Up until this day, NetEnt makes it their it mission to challenge the norm and produce high-end casino games. What puts this software provider in our top casino providers is the fact that NetEnt also owns their own brand of live casino software. This sets them apart because it shows that NetEnt is an expert in all fields of online casino games. 
  • Play’n Go: are one of the best-known providers in online casino games. Established in 2004 by a team of talented developers, this software provider is still going strong by publishing high end and entertaining games for all kinds of players. Under their name you will find games with outstandingly colourful graphics and fitting soundscapes, with games ranging from regular video slots to stylised video-game style casino games that offer exciting bonus levels and extra types of play. Tapping into nostalgic themes like the video game franchise “Hugo” while also publishing classic slots, Play’n Go manages to cater to the needs of all players.
  • Red Tiger: create some of the best-quality games available online right now, and also create specialty games which offer huge prizes, called Megaways slots. Having been bought by NetEnt in 2019, Red Tiger has been able to draw on a wealth of experience that NetEnt also brings with them. Their games are fully licensed and tested in multiple jurisdictions, and tend to be made up of high quality, fun and exciting graphics and gameplay.
  • BTG: are also known as Big Time Gaming, this company has been creating amazing games for quite a while! Specialising in mobile-first games and Megaways slots, BTG are one of the biggest and most trusted named in the industry for a reason. Both Red Tiger and BTG have managed to put themselves on the map despite being relative newcomers by creating visually stunning and exciting games, ranging from the extremely volatile slot machine Bonanza to the relaxing gameplay of Laser Fruit. 
  • Yggdrasil: Known for their spectacularly beautiful slots, Yggdrasil has produced so many great casino games that we would struggle to name them all! Their games are just as well created as games from other comparable developers, but with even more attention to detail paid to the visual front of the game. This means that Yggdrasil games are some of the most recognisable in the online gaming world, with recognisable characters and great games making a mark on casinos across the internet.
  • Pragmatic Play: create games which are super fun, super exciting, and which look amazing too! With their offerings ranging from themes typical in online casino software right up to sponsored slots such as Peaky Blinders, Pragmatic Play create an astonishing range of games that anyone who likes online casinos will enjoy!

How Does Online Casino Software Work? 

Before smartphones and tablets came into the picture, the only way to spin the reels of slot machine online was through your old trusty PC. Casino games on desktop computers tended to be made in Flash, which is no longer industry standard as it stopped games being available on all types of device.

Eventually, when smartphones and tablets became commonplace, there were extra software issues that would make running Flash impossible on some devices. As eventually Flash support was discontinued, the industry could take the leap into HTML5 - a relatively new way of building sites what was interactive, flexible, and far more useful for playing newer games and building better websites than HTML4.

So, why make games in HTML5? Not only does it allow for crisper and smoother animations and graphics, it also allows for the game to played across all devices. HTML5 is supported by all browsers and devices, and also allows for players to play their favourite slot machines on their mobile phones without skimping on quality. This way players can be assured that they can play their favourite games on the go and still enjoy the same experience as they would on desktop. Any good software provider keeps mobile-first in mind when creating a concept for their new games.

There are other aspects of a casino game that have to be coded into online casino software. All spins in a slot game, for instance, are created using a RNG or Random number generator. This ensures that the game is run by chance and not set up to lose more often than win, for example. The RNG has to be tested by outside authorities, which helps to ensure that the company making the software sticks to all the rules of that legislation, including those about fairness.

What Makes a Good Casino Game?

This is a question that has many different answers depending on who you ask. One of the biggest factors in how a casino slot will play is the volatility. Slots can vary between low and high volatility. Volatility is how often the slot symbols change, the variance in their appearance, and how wildly different each spin will be when playing. A lower volatility slot may vary less or have fewer events changing the spins, and a higher volatility slot will contain more changes on the reels.

Low Volatility

Players who prefer to relax and gamble of slots purely for recreation and entertainment will find slot machines with a lower volatility more appealing. These games allow for players to spend a small amount of credits on a large amount of spins. But of course in turn, the payouts will be lower as well. 

High Volatility

Ask a true high roller and they will recommend slot machines with a high volatility. High volatility means that the hit rate of a slot will be rather low, but the payouts will be massive. This means that the player will have to bet a large sum of money in order to see a return in their balance. This style and mechanic of slot machines appeals to players who know what they are doing and are in it for the big prizes.

Low volatility slots are more abundant but we can see a steady rise in popularity of high variance slot games as online gambling becomes more popular. Software providers have been focusing on creating good looking and entertaining high roller slots to match the demand.  Of course, if you like old school you can always stick with classic high variance slot machines like Mega Moolah, Cleopatra, Da Vinci Diamonds and other classic slot machines

Bonuses and Extra Rounds

A casino game will often have extras coded into it. This can come in the form of extra rounds, where lining up certain symbols will get you free spins for example, or even extra bonuses that come about due to game mechanics. For example, collecting a number of symbols as you play might trigger a bonus wheel spin which nets you an extra prize.

Theme and Sound

The casino game should be fun to look at and listen to - after all, you are the one that's playing it! With casino games coming in so many different themes it makes it easy for players to pick something that appeals to them! Game developers generally pick a theme and soundtrack that go together and which is pleasing. Visual effects to make the game more exciting, as well as an encouraging soundtrack and sound effects all work together to improve the game experience.

What Makes Online Casino Software Good? 

There are plenty of aspects that play into what make casino software good. Is it trusthworthy, has no bugs, and works well on any device? Or is it slow, from an unknown developer, and full of errors? Obviously you'd want to look out for games that fit the first type -  so here are a few pointers.

  • Ensure that the company that makes the games is  licensed. You will be able to view their licences on their website or on the licence authority's website.
  • Check that the casino software is provably fair and that it runs using a RNG in order to create true chance when playing
  • Check that you can run the game on both your mobile or tablet and your desktop - a good casino software will be built in HTML5 and run on any device

There are two types of software use in gambling sites: online casinos tied up with a single software developer for games across one or more platforms and online casinos powered by a variety of different software developers under a range of different platforms.

We recommend you also check out the exclusive online casinos page where you’ll find not only casinos powered by a variety of different software providers, but also with unique players’ features. 

Note that the credibility of software companies reflects the overall quality of online casinos that work with these software providers. It is worth paying attention to the software providers of online casinos in order to feel safe playing for real money.

Casino Software FAQ

Is all online casino software the same?

No, many casino software operators will differ! They will have mechanics in common - for example all of them will run using an RNG to determine outcome, but otherwise may have different bonuses, designs, or bet amounts.

Can I play casino games on my mobile or tablet?

Yes, if the same is a modern and up-to-date one from a good provider. All of the providers that we suggest have switched to HTML5 from Flash, meaning their games will play on all mobiles and tablets as well as desktop computers, so long as the devices are up to date.

Can I play casino software for free and for real money!

It depends on the particular casino game you want to play, but many games will have a "test" or "play for fun" option available. When playing in this mode, you will not be playing for real money. To play for real money and make bets, you will need to register with the casino and deposit money into your account wallet.