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

Dualboot Partners

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Quick Facts

$75,000+ Undisclosed 200-500 Charlotte, NC

Services Provided

20% Web Development

10% AI Development

30% Custom Software Development

+4 more services

10% Mobile App Development

10% Cloud Consulting & SI

10% UX/UI Design

10% IT Staff Augmentation

About

Dualboot Partners develops powerful digital solutions through an AI-driven custom software process that blends design, engineering, and product expertise. The team supports everything from early-stage product development to large-scale enterprise modernization, covering areas such as product, marketing, security, and data. Their DB90 AI-first methodology helps speed up delivery, improve quality, and keep every solution closely... Dualboot Partners develops powerful digital solutions through an AI-driven custom software process that blends design, engineering, and product expertise. The team supports everything from early-stage...

Rootquotient

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$10,000+ $50 - $99 / hr 11-50 Toronto, Canada

Services Provided

45% AI Development

45% Custom Software Development

10% Mobile App Development

About

Rootquotient is a global product engineering company that specializes in custom software development and digital product creation. The team works across industries such as healthcare, education, retail, fintech, and energy to design and build tailored solutions. Their expertise in product engineering and management helps businesses develop scalable and high-quality digital products. Rootquotient is a global product engineering company that specializes in custom software development and digital product creation. The team works across industries such as healthcare,...

Andersen Inc.

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$50,000+ $50 - $99 / hr 1-10 Warszawa, Poland

Services Provided

10% AI Development

20% Custom Software Development

15% Mobile App Development

+6 more services

5% Enterprise App Moderni...

10% Low/No Code Developmen...

10% IT Strategy Consulting

10% CRM Consulting and SI

5% Marketing Strategy

15% IT Managed Services

About

Andersen Inc. helps businesses to build & scale digital solutions by serving access to a large pool of experienced engineering talent. The company supports both full-cycle development and team augmentation, which allows organizations to either create dedicated teams or fill specific skill gaps within their existing workforce. With a flexible approach and a strong focus... Andersen Inc. helps businesses to build & scale digital solutions by serving access to a large pool of experienced engineering talent. The company supports both...

Luby Tecnologia SA

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$25,000+ $50 - $99 / hr 200-500 São Paulo, Brazil

Services Provided

15% Web Development

20% AI Development

40% Custom Software Development

+2 more services

15% Mobile App Development

10% Application Testing

About

One of the TOP software development companies in Brazil and Latin America. With over a decade of experience and a team of 200+ vetted specialists, we’ve built a reliable model of staff augmentation that integrates seamlessly with global teams. From our base in Brazil, we operate across US and European time zones, ensuring continuous collaboration... One of the TOP software development companies in Brazil and Latin America. With over a decade of experience and a team of 200+ vetted specialists,...

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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.