B2B Company Directory

Top API Development Companies

A high performing API infrastructure is the backbone of your digital operations. From REST and GraphQL design and third party integrations to API security and documentation and testing, the right development partner turns ideas into scalable products. 10Firms streamlines your search by collecting in depth, verified reviews and performance data... Read More

11+ Companies Listed API Development Packages

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Web Development Custom Software Development Mobile App Development E-Commerce Development Enterprise App Modernization Low/No Code Development Blockchain Application Testing AR/VR Development IoT Development DevOps Managed Services Application Management & Support Robotics Process Automation Wearable App Development

Best API Development Agencies

11+ Companies

AESTAR

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Quick Facts

$5,000+ $25 - $49 / hr 11-50 Kharkiv, Ukraine

Services Provided

10% Web Development

5% AI Development

10% Custom Software Development

+7 more services

15% Mobile App Development

10% E-Commerce Development

5% Generative AI

5% UX/UI Design

5% Web Design

5% API Development

30% AR/VR Development

About

AESTAR delivers full-cycle augmented and virtual reality solutions from concept to launch and ongoing support. The team designs innovative digital experiences that help brands stand out and adapt to modern technology trends. Their work focuses on building immersive solutions that strengthen brand identity and support long-term growth. AESTAR delivers full-cycle augmented and virtual reality solutions from concept to launch and ongoing support. The team designs innovative digital experiences that help brands stand...

ChicMic Studios

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$5,000+ $25 - $49 / hr 11-50 Israel

Services Provided

15% Web Development

15% AI Development

15% Mobile App Development

+5 more services

10% E-Commerce Development

10% API Development

15% Blockchain

10% AR/VR Development

10% Graphic Design

About

ChicMic Studios is a leading mobile and web development company that helps businesses thrive in the digital age. We specialize in delivering innovative, high-performance solutions across mobile, web, and emerging technologies like AI, blockchain, IoT, Gaming and the Metaverse. Our Services Include: Read more ChicMic Studios is a leading mobile and web development company that helps businesses thrive in the digital age. We specialize in delivering innovative, high-performance solutions...

Iterate

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$100,000+ $150 - $199 / hr 1-10 Los Angeles, CA

Services Provided

45% Custom Software Development

20% Mobile App Development

10% UX/UI Design

+2 more services

15% API Development

10% Blockchain

About

Iterate with Purpose. Build with Integrity.Iterate builds efficient and cost-effective software applications with a focus on practical outcomes. Founded in 2010, the team emphasizes function-driven design and a “less is more” approach to development. They also support clients in making technology decisions that improve business performance, guided by values like integrity and accountability. Iterate with Purpose. Build with Integrity.Iterate builds efficient and cost-effective software applications with a focus on practical outcomes. Founded in 2010, the team emphasizes function-driven...

Calidig IT Solutions LLP

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$1,000+ $25 - $49 / hr 1-10 Sirsa, India

Services Provided

10% Web Development

10% AI Development

10% Custom Software Development

+7 more services

10% Mobile App Development

10% E-Commerce Development

10% UX/UI Design

10% Web Design

10% API Development

10% Application Management...

10% Logo

About

At Calidig, we believe in delivering digitally calibrated solutions. We deliver digital solutions to advance business growth and increase digital footprints. Our areas of expertise include website development, mobile app development, UX/UI design and custom application development. To back this up, we have a team of passionate and skilled developers. Read more At Calidig, we believe in delivering digitally calibrated solutions. We deliver digital solutions to advance business growth and increase digital footprints. Our areas of expertise...

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API Development FAQs

Looking for a API Development company but not sure where to start? We've put together answers to the most common questions businesses ask when searching for a trusted partner.

How do I choose the right API development company for my project?

Start by defining your project scope, budget, and timeline. Look at each firm's portfolio for relevant industry experience, check verified client reviews on 10Firms for reliability and communication, and confirm they have the tech stack your project requires.

How much does it cost to hire a API development company?

Costs vary widely based on project complexity, the firm's location, and team seniority. Typical engagements range from $5,000 to $50,000, depending on scope and the firm's experience level. Use 10Firms filters to compare firms within your budget range.

What is the difference between a API development agency and a freelancer?

Agencies typically offer a full team of developers, QA engineers, project managers, and solution architects, with more structured processes, making them better suited for complex or long term projects. Freelancers can be more cost effective for smaller, well defined tasks but often have limited capacity.

How long does it take to build and launch a new application?

Most projects take 4 to 12 weeks to complete, though larger or more complex engagements can extend to several months.

Do API development companies also handle ongoing support after the project is delivered?

Most firms listed on 10Firms offer post launch support packages covering bug fixes, performance monitoring, and feature enhancements. Check each firm's profile to confirm terms and pricing.

What should I look for in a API development company's portfolio?

Look for evidence of clean, scalable code and successful production deployments, and where available, measurable outcomes like faster load times or increased user adoption delivered for past clients.

Can these companies help with related services beyond API development?

Many firms on 10Firms offer end to end services covering UX/UI design, quality assurance, and DevOps support alongside core development. If you need a specialist for just one phase, check each firm's service listing to confirm.