Top 20 Application Modernization Companies in Croatia
The Best of December 2025Looking for a top legacy modernization service in Croatia?
Application modernization companies can help create new business value from existing applications. Finding the right company to partner with, however, can be an overwhelming process.
To assist you in your search for a partner, we’ve compiled this list of the top application modernization services in Croatia. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Croatia Enterprise Application Modernization Services
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1$50,000+50 - 249 employeesZagreb, CroatiaNotch is a software development firm established in 2014. Based in Zagreb, Croatia; Split, Croatia; Langen (Hessen), Germany and Riyadh, Saudi Arabia, their midsize team focuses on Custom Software Development, Artificial Intelligence, Enterprise App Modernization, IT staff augmentation, and more.Read More
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STRABAG Spotsie 1WorldSync BELCARIndustries
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2$10,000+250 - 999 employeesZagreb, CroatiaRead More
Five is web and mobile app development agency headquartered in New York with offices in Croatia. The 50+ person product team has been creating stunning, award-winning mobile products since 2008.
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Rosetta StoneIndustries
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3Undisclosed50 - 249 employeesZagreb, CroatiaRead More
Serengeti is a custom development and testing firm based in Zagreb, Croatia. Founded in 2007, their team of 100 serves clients in the finance and healthcare sectors. Services include .NET, Java, and C# development.
Clients
KNAPPIndustries
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4$10,000+10 - 49 employeesZagreb, CroatiaRead More
Codebooq is a software development company founded in Zagreb, Croatia in 2020 with fewer than 10 members. They offer IT staff augmentation, enterprise app modernization, and custom software development solutions for small and mid-market agencies alike.
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5$25,000+10 - 49 employeesZagreb, CroatiaRead More
Launched in 2016, LEAPWISE is a custom software development firm. The agency provides custom software development, IoT development, enterprise app modernization, and business consulting and has a small team.
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6$25,000+10 - 49 employeesSplit, CroatiaRead More
lilcodelab is a software engineering company headquartered in Split, Croatia with additional offices in Munich, Germany. Founded in 2017, they currently have a team of 9 that specializes in custom software and web development as well as enterprise app modernization. lilcodelab works with clients of all sizes within the business services, financial services, and government industries.
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7$25,000+10 - 49 employeesZagreb, CroatiaRead More
Intellexi, a enterprise app modernization company, is in Zagreb, Croatia. The small firm was launched in 2012. Their team offers enterprise app modernization, custom software development, IoT development, and Artificial Intelligence.
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8$10,000+10 - 49 employeesZagreb, CroatiaRead More
Thespian is a full-cycle software development company in Zagreb, Croatia. Founded in 2015, their 21 employees serve midmarket clients and enterprises in the EdTech, MedTech, blockchain, and transportation industries. Services include digital product development, software modernization, staff augmentation, and IT consulting.
Clients
ConnectBusIndustries
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9$10,000+10 - 49 employeesZagreb, CroatiaLeverUP is a small CRM consulting and SI company. Launched in 2021, the firm is based in Zagreb, Croatia and Tallinn, Estonia. Their services include CRM consulting and SI, Email Marketing, Artificial Intelligence, and Enterprise App Modernization.Read More
Clients
DanfossIndustries
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10$50,000+50 - 249 employeesZagreb, CroatiaCROZ is an Enterprise App Modernization company located in Zagreb, Croatia. Their services include Enterprise App Modernization and cloud consulting & SI.Read More
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11Undisclosed10 - 49 employeesZagreb, CroatiaIgnitech Solutions is a small Zagreb, Croatia-based IT strategy consulting company. Launched in 2021, the team offers IT strategy consulting, BI & big data consulting & SI, other IT consulting and SI, custom software development, and more.Read More
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12$1,000+2 - 9 employeesSplit, CroatiaRead More
Shard Labs is a software company based in Split, Croatia, and founded in 2019. Their team of more than two specializes in custom software development, web development, and blockchain services for clients in the fields of IT solutions, education, and other industries.
Clients
EthereumIndustries
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13$25,000+10 - 49 employeesZagreb, Croatia3mi Lab is a custom software development firm. They offer Custom Software Development and Web Development and were launched in 2018. The company is in Zagreb, Croatia.Read More
Clients
NEOGOV INA d.d. Infosit d.o.o.Industries
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14$5,000+50 - 249 employeesZagreb, CroatiaBased in Zagreb, Croatia, TIS Grupa is a custom software development firm. They specialize in Custom Software Development and Enterprise App Modernization.Read More
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15$5,000+50 - 249 employeesZagreb, CroatiaSolvership is a business intelligence company established in 2001. Based in Zagreb, Croatia and London, England, the team provides BI & big data consulting & SI and other IT consulting and SI.Read More
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16$5,000+2 - 9 employeesVaraždin, CroatiaOmnifIT d.o.o., a custom software development company, was launched in 2020. The small team offers Custom Software Development and Enterprise App Modernization.Read More
Clients
DPD Switzerland DPD Deutschalnd SCS Computer Systems Release14Industries
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17$25,000+50 - 249 employeesZagreb, CroatiaBISS d.o.o., a custom software development firm, was launched in 2009. The agency provides Custom Software Development and Mobile App Development.Read More
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18$5,000+2 - 9 employeesJosipdol, CroatiaMatrica Company is a software development firm. The Josipdol, Croatia-based agency focuses on Custom Software Development and Enterprise App Modernization.Read More
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19$5,000+10 - 49 employeesZagreb, CroatiaKodilion, a custom software development firm, is based in Zagreb, Croatia and Zagreb, Croatia. They specialize in Custom Software Development and cloud consulting & SI and were established in 2021.Read More
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20$5,000+2 - 9 employeesZagreb, CroatiaLaunched in 2000, Opto Software is a small Zagreb, Croatia-based website development company. Their team offers Web Development and Advertising.Read More
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21UndisclosedFreelancer employeesZagreb, CroatiaWeb development firm Portobyte was launched in 2022. The team offers Web Development and Enterprise App Modernization.Read More
Clients
Addiko BankIndustries
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22$5,000+Freelancer employeesVelika Gorica, CroatiaFlyntech is a software development firm. They are based in Velika Gorica, Croatia and have small team of experts. Their services include Custom Software Development and Web Development.Read More
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