B2B Company Directory

Top Custom Software Development Companies

A high performing custom software solution is the backbone of your digital operations. From requirements discovery and system architecture to bespoke development and third party integrations, the right development partner turns ideas into scalable products. 10Firms streamlines your search by collecting in depth, verified reviews and performance data on thousands... Read More

220+ Companies Listed Custom Software Development Packages

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

Best Custom Software Development Agencies

220+ Companies

INOXOFT

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$25,000+ $25 - $49 / hr 11-50 Newark, DE

Services Provided

40% Web Development

10% AI Development

40% Custom Software Development

+1 more services

10% AI Consulting

About

Inoxoft is a trusted, award-winning custom software development company with headquarters in Philadelphia, USA. With over 10 years of experience, a team of more than 200 in-house engineers, and a track record of successfully delivering over 200 projects, Inoxoft builds scalable, secure, and innovative digital solutions to help startups and small to medium-sized businesses achieve... Inoxoft is a trusted, award-winning custom software development company with headquarters in Philadelphia, USA. With over 10 years of experience, a team of more than...

Digis, a Fiverr company (NYSE: FVRR)

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

Services Provided

40% Web Development

40% Custom Software Development

20% IT Staff Augmentation

About

Certified software experts helping businesses scale with precisionDigis delivers custom web and mobile development solutions supported by a team of over 200 professionals. As part of the Fiverr Group, the company combines global resources with transparent processes to help clients scale efficiently. With expertise across multiple technologies and industries, Digis focuses on innovation, staff augmentation,... Certified software experts helping businesses scale with precisionDigis delivers custom web and mobile development solutions supported by a team of over 200 professionals. As part...

unicrew

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$50,000+ $50 - $99 / hr 11-50 L'viv, Ukraine

Services Provided

40% Web Development

40% Custom Software Development

10% Mobile App Development

+1 more services

10% IT Staff Augmentation

About

unicrew combines software engineering expertise with AI-driven workflows to build and scale tailored digital solutions. The team provides high-performing remote engineering teams that integrate into client organizations to improve delivery speed and support innovation. Their focus is on accelerating development while maintaining quality and alignment with business goals. unicrew combines software engineering expertise with AI-driven workflows to build and scale tailored digital solutions. The team provides high-performing remote engineering teams that integrate into...

Dotsquares

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Quick Facts

$1,000+ $25 - $49 / hr 1-10 London, England

Services Provided

20% Web Development

5% AI Development

15% Custom Software Development

+5 more services

15% Mobile App Development

15% E-Commerce Development

5% Cloud Consulting & SI

5% CRM Consulting and SI

20% IT Managed Services

About

Founded in 2002, Dotsquares is a leading IT services company with over 24 years of experience delivering cutting-edge digital solutions. With 27,000+ successful projects and over 3,500+ five-star reviews (⭐⭐⭐⭐⭐) online, we specialize in Web & App Development, Custom Software Development, Cloud Computing, and CRM Consulting for businesses of all sizes and industries. As a... Founded in 2002, Dotsquares is a leading IT services company with over 24 years of experience delivering cutting-edge digital solutions. With 27,000+ successful projects and...

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Custom Software Development FAQs

Looking for a Custom Software 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 custom software 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 custom software development company?

Costs vary widely based on project complexity, the firm's location, and team seniority. Complex engagements often range from $25,000 to $150,000 or more, depending on scale and specialization required. Use 10Firms filters to compare firms within your budget range.

What is the difference between a custom software 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?

These engagements typically take 3 to 9 months, depending on complexity and organizational scale.

Do custom software 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 custom software 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 custom software 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.