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

Onix-Systems

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$10,000+ $25 - $49 / hr 200-500 Kropyvnytskyi, Ukraine

Services Provided

15% AI Development

40% Custom Software Development

15% AR/VR Development

+2 more services

15% DevOps Managed Service...

15% ERP Consulting and SI

About

Onix-Systems is a full-cycle software development company that builds custom digital solutions for startups & small to mid-sized businesses. With over 23 years of experience and 1,100+ completed projects, the team delivers scalable applications across global markets. Their multidisciplinary experts focus on creating solutions that fit perfectly with business goals and drive measurable outcomes. Onix-Systems is a full-cycle software development company that builds custom digital solutions for startups & small to mid-sized businesses. With over 23 years of experience...

Goji Labs

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$25,000+ $100 - $149 / hr 11-50 Los Angeles, CA

Services Provided

10% AI Development

40% Custom Software Development

30% Mobile App Development

+2 more services

10% UX/UI Design

10% Web Design

About

Goji Labs is an award-winning digital product agency that builds it right. For over a decade, we’ve helped leading brands launch 400+ digital products. Our expertise spans product strategy, UI/UX design, and software development. We believe no great venture should be held back by execution. That’s why we lead with strategy, work as true partners,... Goji Labs is an award-winning digital product agency that builds it right. For over a decade, we’ve helped leading brands launch 400+ digital products. Our...

UX Team

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$5,000+ $100 - $149 / hr 11-50 Franklin Lakes, NJ

Services Provided

10% Web Development

15% Custom Software Development

15% Enterprise App Modernization

+2 more services

50% UX/UI Design

10% Web Design

About

UX Team designs custom software interfaces using a research-driven, human-centered approach. The team focuses on solving real business problems by basing design decisions on user data, testing, and evidence rather than assumptions or trends. Their process aims to create intuitive and efficient digital products that align closely with user needs and business goals. UX Team designs custom software interfaces using a research-driven, human-centered approach. The team focuses on solving real business problems by basing design decisions on user...

Fireart Studio

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$10,000+ $50 - $99 / hr 11-50 Warszawa, Poland

Services Provided

35% Web Development

20% Custom Software Development

10% Mobile App Development

+4 more services

10% UX/UI Design

15% Web Design

5% Branding

5% Product Design

About

Fireart Studio is a UI/UX design and software development company driven by excellence and oriented to the client's success. We build elegant digital products that help brands shine out through each user interaction. Our team has valuable experience in serving global brands with the highest requirements, such as Google, Rolls-Royce, MyTaxi, Atlassian, Pipedrive, Swisscom, Huawei,... Fireart Studio is a UI/UX design and software development company driven by excellence and oriented to the client's success. We build elegant digital products that...

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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.