Top 20 API Development Services
The Best of April 2026Looking for a top API developer?
With their in-depth knowledge of API technologies, programming languages, and industry best practices, API developers help businesses design, build, and deploy custom APIs that meet their specific business requirements. By collaborating with API development professionals, businesses can unlock new opportunities for data sharing, automation, and integration.
That's why we've created this list of the best API developers for you to review. Read through company descriptions, former clients, and notable projects to find the best fit for your business.
List of the Best API Development Companies
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1Undisclosed10 - 49 employeesNašice, CroatiaSemantic Applications GmbH & Co. KG is a software development company located in Fulda, Germany and Našice, Croatia. The agency specializes in Custom Software Development, Web Development, API Development, DevOps Managed Services, and more and has a small team.The agency was launched in 2011.Read More
Clients
Landeskriminalamt Thüringen European Central Bank Trialytix AlcedisIndustries
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2Undisclosed10 - 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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3$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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4Undisclosed10 - 49 employeesZagreb, CroatiaProMDM d.o.o. Is a Cybersecurity company. The Zagreb, Croatia-based agency was launched in 2013. Their services include Cybersecurity and other IT consulting and SI.Read More
Industries
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5$50,000+50 - 249 employeesZagreb, CroatiaLaunched in 2008, Koios Consulting is a software development firm. The team provides Custom Software Development and Business Consulting.Read More
Industries
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6$10,000+2 - 9 employeesZaprešić, CroatiaCODICODE D.O.O., a web design agency, is in Zaprešić, Croatia. They provide Web Design and Web Development.Read More
Industries
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7$1,000+2 - 9 employeesPrelog, CroatiaEstablished in 2023, Nordia Group is a web development firm. The team offers Web Development and Mobile App Development.Read More
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8$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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9UndisclosedFreelancer employeesZagreb, CroatiaStranicaZaMene.eu is a web development firm. The team focuses on Web Development and API Development, and the agency is based in Zagreb, Croatia.Read More
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10$1,000+2 - 9 employeesOsijek, CroatiaReshape Agency is an IT strategy consulting company. In Osijek, Croatia, the firm was launched in 2023. Their services include IT strategy consulting and CRM consulting and SI.Read More
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11$5,000+2 - 9 employeesZagreb, CroatiaEstablished in 2025, FlowSolutions d.o.o is a small website development firm in Zagreb, Croatia. Their team provides Web Development and Mobile App Development.Read More
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12$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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13$5,000+Freelancer employeesOsijek, CroatiaFOR IN SOLUTIONS d.o.o. Is a custom software development firm established in 2022. Their team specializes in Custom Software Development and Enterprise App Modernization.Read More
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14$1,000+2 - 9 employeesZagreb, CroatiaCyberQode is a custom software development firm. The Zagreb, Croatia-based firm was founded in 2021. Their services include Custom Software Development and Web Development.Read More
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15Undisclosed1,000 - 9,999 employeesZagreb, CroatiaSoftware development company ASEE Content Services | ASEE Group was launched in 2007. The team offers Custom Software Development and Business Consulting.Read More
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