Top 80 API Development Services
The Best of May 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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1$1,000+2 - 9 employeesVancouver, CanadaDeltAlyz Corp. Is a small custom software development company established in 2019. Their services include Custom Software Development, Artificial Intelligence, Robotics Process Automation, AI Consulting, and more. The company is located in Vancouver, Canada.Read More
Clients
Government of CanadaIndustries
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2$50,000+10 - 49 employeesToronto, CanadaRead More
Software development firm Therefore is in Toronto, Canada. The small team focuses on Custom Software Development, API Development, Digital Strategy, Web Design, and more. The agency was established in 2003.
Clients
Goway Travel Rocky Mountaineer DuVine CyclingIndustries
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3$50,000+2 - 9 employeesCalgary, CanadaArtificial intelligence development company Algo Clan Inc. Was established in 2020. The small team offers Artificial Intelligence, DevOps Managed Services, API Development, Warehousing & Distribution, and more. The agency is headquartered in Calgary, Canada; Edmonton, Canada and San Francisco, California.Read More
Industries
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4$1,000+10 - 49 employeesToronto, CanadaWeb design company Proteus Development was founded in 2017. Their small team is located in Toronto, Canada and Dallas, Texas. Their services include web design, custom software development, and web development.Read More
Industries
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5$25,000+10 - 49 employeesCalgary, CanadaFindan Software is a custom software development firm. Their small team is headquartered in Calgary, Canada. The firm offers Custom Software Development, Web Development, API Development, Other Application Development, and more.Read More
Industries
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6$1,000+2 - 9 employeesEdmonton, CanadaIOA Digital, a CRM consulting and SI and api development company, is located in Edmonton, Canada. The small team offers CRM consulting and SI and api development and was established in 2018.Read More
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7$25,000+10 - 49 employeesCalgary, CanadaSoftware development firm Novus Tech Group focuses on Custom Software Development and API Development. They were established in 2024.Read More
Industries
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8$5,000+2 - 9 employeesMontréal, CanadaOneNine Innovations is a custom software development company. The Montréal, Canada-based company was launched in 2024. Their team focuses on Custom Software Development and Web Development.Read More
Clients
Cégep Saint-Laurent -
9Undisclosed10 - 49 employeesVancouver, CanadaTimeTrex, a software development firm and API Development company, offers Custom Software Development and API Development. The agency is based in Vancouver, Canada and Toronto, Canada.Read More
Industries
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10Undisclosed10 - 49 employeesVancouver, CanadaVoPay International Inc. Is a software development firm. They are in Vancouver, Canada, and their services include Custom Software Development and API Development.Read More
Industries
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11$10,000+1,000 - 9,999 employeesToronto, CanadaNANANA is a large API Development company founded in 2025. Their team specializes in API Development.Read More
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12$10,000+2 - 9 employeesToronto, CanadaEstablished in 2015, Quantum Data Science Inc. Is a small business intelligence company in Toronto, Canada. Their team offers BI & big data consulting & SI and Custom Software Development.Read More
Clients
Xplore Sirius XM Familia Fine Foods Inc. Ananda Inc -
13$25,000+10 - 49 employeesCharlottetown, CanadaLaunched in 2015, TORQ IT Limited is a small Charlottetown, Canada-based e-commerce development company. Their team offers E-Commerce Development and Enterprise App Modernization.Read More
Industries
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14$10,000+10 - 49 employeesToronto, CanadaCoaldev is an AI Consulting company. Launched in 2018, the team specializes in AI Consulting, Custom Software Development, Artificial Intelligence, API Development, and more. Their small company is Toronto, Canada-based.Read More
Industries
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15$10,000+2 - 9 employeesBrossard, CanadaSoftware development firm Altevo Software Engineering | Montreal offers Custom Software Development and Web Development. They were launched in 2018.Read More
Clients
Borealis Château D'Ivoire FlexyB SolutionsIndustries
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16Undisclosed10 - 49 employeesPrince George, CanadaOSOlink Solutions is a SEO agency. Their small team is based in Prince George, Canada and provides Search Engine Optimization and Web Development. The firm was founded in 2014.Read More
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17$1,000+50 - 249 employeesToronto, CanadaComfygen Technologies, a mobile application development company, was launched in 2019. The midsize Jaipur, India-based team offers Mobile App Development, Low/No Code Development, Web Development, E-Commerce Development, and more.Read More
Industries
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18Undisclosed10 - 49 employeesOttawa, CanadaMaverin is an IT strategy consulting company. Their team is in Ottawa, Canada. The company offers IT strategy consulting and cloud consulting & SI.Read More
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19Undisclosed2 - 9 employeesHamilton, CanadaHammer Software, a small IT managed services company, is in Hamilton, Canada. Their services include IT managed services and other IT consulting and SI.Read More
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20Undisclosed50 - 249 employeesToronto, CanadaData analytics company MRS Company Ltd. Was founded in 1979. The agency focuses on BI & big data consulting & SI and cloud consulting & SI.Read More
Industries
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21$1,000+2 - 9 employeesNew Westminster, CanadaOmega-X is an Application Testing company. The team is in New Westminster, Canada and Mumbai, India, and their services include Application Testing and Mobile App Development.Read More
Industries
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22$1,000+2 - 9 employeesOttawa, CanadaServeSpark, a CRM consulting and SI company, was established in 2020. The team offers CRM consulting and SI and Custom Software Development.Read More
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23$1,000+2 - 9 employeesOttawa, CanadaAPI Development company Link Clicks Inc. Was launched in 2000. The firm offers API Development and Mobile App Development, and is small.Read More
Industries
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24$10,000+10 - 49 employeesLondon, CanadaSTEP Software Inc. Is a software development firm founded in 2005. The small team offers Custom Software Development and Enterprise App Modernization.Read More
Industries
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25Undisclosed10 - 49 employeesVaughan, CanadaFoscio Canada, a software development company, is based in Vaughan, Canada. Founded in 2017, the team offers Custom Software Development and Web Development.Read More
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26$25,000+10 - 49 employeesCalgary, CanadaMidas Labs Inc. Is a small custom software development company. They focus on Custom Software Development and Mobile App Development and were established in 2023.Read More
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27Undisclosed2 - 9 employeesToronto, CanadaFounded in 2021, CJ Technologies is a web development company. Based in Toronto, Canada, the team focuses on Web Development and API Development.Read More
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28$1,000+2 - 9 employeesVancouver, CanadaLocated in Vancouver, Canada and Islamabad, Pakistan, Hayat Consulting is a software development company. Established in 2020, the team specializes in Custom Software Development and Web Development.Read More
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29$1,000+2 - 9 employeesCalgary, CanadaRuvyx Labs is a Calgary, Canada-based website development company. They offer Web Development and Artificial Intelligence.Read More
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30$5,000+2 - 9 employeesPincourt, CanadaCustom software development firm Koden Labs was established in 2025. The small team focuses on Custom Software Development and Mobile App Development.Read More
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