Top 20 API Development Services
The Best of December 2025Looking 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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1$1,000+2 - 9 employeesYardley, PAArtol Web Studio is a SEO services firm established in 2024. The agency offers Search Engine Optimization, Custom Software Development, Web Development, API Development, and more and has a small team. The agency is located in Yardley, Pennsylvania.Read More
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2$5,000+2 - 9 employeesCoraopolis, PARead More
American Web Devs is a software development company founded in 2019 and located in Pittsburgh. The team of about 5 individuals offers custom software development and web development services to small businesses.
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3$5,000+10 - 49 employeesPittsburgh, PAFoo Bar is a custom software development firm. They offer Custom Software Development and Enterprise App Modernization and were established in 2018. The firm is based in Pittsburgh, Pennsylvania.Read More
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4$5,000+10 - 49 employeesBlue Bell, PABased in Blue Bell, Pennsylvania, Hammer Dev is a big data company. The team offers BI & big data consulting & SI and Custom Software Development.Read More
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5$10,000+2 - 9 employeesMechanicsburg, PAInnovigo is a small software development company headquartered in Novi Pazar, Serbia; Novi Pazar, Serbia and Mechanicsburg, Pennsylvania. Established in 2022, the team specializes in Custom Software Development, Web Development, Mobile App Development, API Development, and more.Read More
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6Undisclosed10 - 49 employeesPittsburgh, PACardChamp is a Pittsburgh, Pennsylvania-based Blockchain company. Established in 2009, the team focuses on Blockchain and ERP consulting and SI.Read More
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7Undisclosed10 - 49 employeesPittsburgh, PAForAllSecure is an IT managed services company. Their small team is located in Pittsburgh, Pennsylvania. Their services include IT managed services and Application Testing.Read More
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8Undisclosed2 - 9 employeesLancaster, PACloak&Dagger is a web design company. The New York, New York-based company offers Web Design and UX/UI Design.Read More
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9Undisclosed10 - 49 employeesPhiladelphia, PADigital Marketing Group LLC is a small Content Marketing company founded in 2013. Their team specializes in Content Marketing and Search Engine Optimization.Read More
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10Undisclosed2 - 9 employeesFort Washington, PAData analytics company AccuCentrix, Inc specializes in BI & big data consulting & SI and Custom Software Development. They are headquartered in Fort Washington, Pennsylvania.Read More
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11Undisclosed2 - 9 employeesShillington, PARC Website Group is a social media marketing company launched in 2014. The small team specializes in Social Media Marketing and Content Marketing.Read More
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12Undisclosed50 - 249 employeesPittsburgh, PARealogicWorks is an UX design agency. Their midsize team is in Pittsburgh, Pennsylvania and Naples, Florida. Their services include UX/UI Design and IT strategy consulting.Read More
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13Undisclosed2 - 9 employeesPhiladelphia, PACloudMine is a business intelligence company. Their small team of employees is based in Philadelphia, Pennsylvania. Their team provides BI & big data consulting & SI and Web Development.Read More
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14Undisclosed2 - 9 employeesDoylestown, PANoetyx is a software development company. Their small team of employees is located in Doylestown, Pennsylvania. Their team focuses on Custom Software Development and Robotics Process Automation.Read More
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15Undisclosed2 - 9 employeesVenetia, PACommerceConnect is a cloud consulting & SI company established in 2003. Their team provides cloud consulting & SI and CRM consulting and SI.Read More
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16Undisclosed2 - 9 employeesKittanning, PAQuandarymat is a web development company. The team provides Web Development and E-Commerce Development, and the firm is headquartered in Kittanning, Pennsylvania.Read More
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17Undisclosed2 - 9 employeesBryn Mawr, PAUtulla is a small big data company in Bryn Mawr, Pennsylvania. The team offers BI & big data consulting & SI and Custom Software Development.Read More
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18Undisclosed2 - 9 employeesMechanicsburg, PABased in Mechanicsburg, Pennsylvania, nkahootz software design is a small software development firm. Their services include Custom Software Development and Web Development.Read More
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19Undisclosed10 - 49 employeesLancaster, PA5.15 Technologies is a small IT strategy consulting company. They offer IT strategy consulting and cloud consulting & SI and were founded in 2021.Read More
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20Undisclosed2 - 9 employeesState College, PAFounded in 2008, Yellow DUX is a web development firm. The team specializes in Web Development and CRM consulting and SI.Read More
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