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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Best API Development Agencies

11+ Companies
01 Scalo logo

Scalo

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Quick Facts
$10,000+ $50 - $99 / hr 200-500 Kraków, Poland
Services Provided
10% Web Development
30% Custom Software Development
10% Mobile App Development
+6 more services
10% IT Staff Augmentation
5% API Development
10% BI & Big Data Consulti...
5% DevOps Managed Service...
10% IT Managed Services
10% Application Management...
About

Scalo is a Poland-based software development company that is focused on building scalable and future-ready digital solutions. With 17 years of experience & more than...

02 deltAlyz Corp. logo

deltAlyz Corp.

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Quick Facts
$1,000+ $100 - $149 / hr 1-10 Vancouver, Canada
Services Provided
10% AI Development
10% Custom Software Development
10% Generative AI
+8 more services
10% Low/No Code Developmen...
10% AI Consulting
5% Web Design
10% API Development
5% CRM Consulting and SI
5% BI & Big Data Consulti...
5% ERP Consulting and SI
10% Robotics Process Autom...
About

deltAlyz Corp. builds custom AI-powered software solutions that are designed around each organization’s specific needs. Since 2019, the company has partnered with businesses to improve...

03 Bles Software logo

Bles Software

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Quick Facts
$1,000+ $25 - $49 / hr 11-50 Yehud-Monosson, Israel
Services Provided
11% Web Development
12% AI Development
10% Custom Software Development
+5 more services
10% Mobile App Development
10% E-Commerce Development
14% Generative AI
10% Web Design
12% API Development
About

Bles Software builds custom software solutions that are designed to support long-term growth and improve operational efficiency. The team works with startups, SMEs, and enterprise...

04 DreamzTech Solutions logo

DreamzTech Solutions

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0.0
0 Reviews
Quick Facts
$10,000+ < $25 / hr 200-500 Tempe, AZ
Services Provided
10% Web Development
10% AI Development
25% Custom Software Development
+9 more services
5% Mobile App Development
10% Generative AI
5% Enterprise App Moderni...
5% IT Staff Augmentation
5% Low/No Code Developmen...
5% API Development
5% Blockchain
5% Application Testing
5% Robotics Process Autom...
About

DreamzTech Solutions builds enterprise grade software solutions that help businesses to innovate & scale. With over 15 years of experience, the company delivers technology driven...

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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.