Top 70 OPEN API Developers in Eastern Europe
The Best of April 2026
Jump to Most Reviewed Companies
List of the Best Eastern Europe OPEN API Development Companies
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31$1,000+2 - 9 employeesNovi Pazar, SerbiaBonislabs is an IT strategy consulting company headquartered in Novi Pazar, Serbia. The small company was founded in 2022. Their team focuses on IT strategy consulting, Custom Software Development, Web Development, Artificial Intelligence, and more.Read More
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32$5,000+10 - 49 employeesChișinău, MoldovaEstablished in 1999, Optimum-web is a web development company. Their small team is located in Odesa, Ukraine and Chișinău, Moldova. Their services include web development, custom software development, mobile app development, cybersecurity, and more.Read More
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33$1,000+2 - 9 employeesRīga, LatviaWebsalutem Web Development Agency is a small website development company. Launched in 2019, the firm is headquartered in Rīga, Latvia. Their services include Web Development, E-Commerce Development, API Development, Web Design, and more.Read More
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34$75,000+10 - 49 employeesL'viv, UkraineLocated in Szczecin, Poland and L'viv, Ukraine, Aimtraction is an IT staff augmentation company. The small team specializes in IT staff augmentation, Custom Software Development, Web Development, Enterprise App Modernization, and more and was founded in 2018.Read More
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35$5,000+2 - 9 employeesNovi Sad, SerbiaCustom software development company ITELLIGENTIX is located in Novi Sad, Serbia. The agency specializes in Custom Software Development, Web Development, Mobile App Development, and API Development and is small.The agency was launched in 2023.Read More
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36UndisclosedFreelancer employeesTallinn, EstoniaAdonexus is a software development firm established in 2024. Their small team is in Tallinn, Estonia. The firm provides Custom Software Development, Artificial Intelligence, DevOps Managed Services, Generative AI, and more.Read More
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37$5,000+10 - 49 employeesPraha-Kunratice, Czech RepublicConsensus Innovations is an AI Agents company. The Praha-Kunratice, Czech Republic-based company was founded in 2022. The small team focuses on AI Agents, Custom Software Development, Artificial Intelligence, IT strategy consulting, and more.Read More
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38$1,000+2 - 9 employeesAthina, GreeceBased in Athina, Greece, LOGIC is a web design agency. Launched in 2020, the team focuses on Web Design and Web Development.Read More
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Arpedon Neon Law Phenometry RocketX -
39Undisclosed2 - 9 employeesTârgu Mureș, RomaniaSC LERATECH INNOVATION SRL, a branding agency, was launched in 2022. Based in Târgu Mureș, Romania, the team specializes in Branding and UX/UI Design.Read More
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40$1,000+10 - 49 employeesKraków, PolandEura7 Software House is a custom software development firm. Launched in 1999, the team specializes in Custom Software Development and UX/UI Design.Read More
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TescoIndustries
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41$5,000+2 - 9 employeesBudapest, HungaryFounded in 2022, PetakSys is a custom software development company. The company provides Custom Software Development and IT strategy consulting.Read More
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42$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
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NEOGOV INA d.d. Infosit d.o.o.Industries
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43$5,000+10 - 49 employeesKoszalin, PolandI4B is a small API Development company established in 2011. Their team offers API Development and Enterprise App Modernization.Read More
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44$5,000+2 - 9 employeesKraków, PolandEPR is a Generative AI company. The firm is located in Kraków, Poland. Their services include Generative AI and Web Development.Read More
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45$10,000+10 - 49 employeesBucurești, RomaniaIT staff augmentation company Webventure Development is located in București, Romania. Their services include IT staff augmentation and Custom Software Development.Read More
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Pro TVIndustries
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46$100,000+50 - 249 employeesSofia, BulgariaEstafet is a midsize custom software development firm. Launched in 2002, the team provides Custom Software Development and Artificial Intelligence.Read More
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47$5,000+10 - 49 employeesRīga, LatviaApp development firm Codify Group is headquartered in Rīga, Latvia and Rīga, Latvia. Their services include Mobile App Development and Custom Software Development.Read More
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48$1,000+2 - 9 employeesÚstí nad Labem-město, Czech RepublicOctopod Systems is a custom software development firm. They were established in 2024 and provide Custom Software Development and Web Development.Read More
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49Undisclosed2 - 9 employeesBudapest, HungaryLocated in Naperville, Illinois and Budapest, Hungary, Hawkdive Media is a small API Development company. Their services include API Development and Web Development.Read More
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50$75,000+Freelancer employeesLjubljana, SloveniaTritron is an IT strategy consulting company. Established in 2025, the team focuses on IT strategy consulting and Custom Software Development. The firm is based in Ljubljana, Slovenia.Read More
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51$25,000+10 - 49 employeesBitola, North MacedoniaX3M Labs is a software development firm. They are headquartered in Bitola, North Macedonia and Skopje, North Macedonia and have small team. They offer Custom Software Development and Web Development.Read More
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52Undisclosed2 - 9 employeesŁaziska Górne, PolandEasyAutomate is an IT strategy consulting company. Based in Łaziska Górne, Poland and Łódź, Poland, the team focuses on IT strategy consulting and CRM consulting and SI.Read More
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53$1,000+10 - 49 employeesSkopje, North MacedoniaFounded in 2020, CodeCraft is a cloud consulting & SI company. Headquartered in Skopje, North Macedonia, the team focuses on cloud consulting & SI and Custom Software Development.Read More
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54$1,000+2 - 9 employeesVarna, BulgariaFounded in 2020, Websycraft is a custom software development firm. The team provides Custom Software Development and Web Development and is based in Varna, Bulgaria and Wien, Austria.Read More
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55$10,000+10 - 49 employeesTartu, EstoniaGigson Solutions is a Barcelona, Spain-based Cybersecurity company. They focus on Cybersecurity and Custom Software Development and were launched in 2022.Read More
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56$5,000+2 - 9 employeesWarszawa, PolandFounded in 2019, RK Software Systems is a website development company. In Warszawa, Poland, the team offers Web Development and API Development.Read More
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57Undisclosed10 - 49 employeesVarna, BulgariaNexGen is a Burgas, Bulgaria-based software development company. They provide Custom Software Development and IT strategy consulting and were launched in 2014.Read More
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58$5,000+50 - 249 employeesChișinău, MoldovaSpacecore is a custom software development company. The midsize Chișinău, Moldova-based team specializes in Custom Software Development and ERP consulting and SI. The agency was founded in 2017.Read More
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59$10,000+2 - 9 employeesŁódź, PolandProgramium, a custom software development firm, was founded in 2025. The agency focuses on Custom Software Development and Web Development.Read More
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60$1,000+Freelancer employeesWarszawa, PolandDigital Strategy company Alaska Hub was launched in 2024. The small team focuses on Digital Strategy and Custom Software Development.Read More
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