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

Simple Thread

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$50,000+ $150 - $199 / hr 1-10 Glen Allen, VA

Services Provided

50% Custom Software Development

50% UX/UI Design

About

Simple Thread works with modern electric utilities to solve complex operational challenges through thoughtful digital transformation. The team takes a human-centered design approach, building tools that support everything from capacity planning and forecasting to team management and data visualization. With over a decade of experience, they help utility organizations improve efficiency and make more informed... Simple Thread works with modern electric utilities to solve complex operational challenges through thoughtful digital transformation. The team takes a human-centered design approach, building tools...

Ballast Lane Applications LLC

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$25,000+ $50 - $99 / hr 11-50 Boston, MA

Services Provided

20% AI Development

60% Custom Software Development

20% UX/UI Design

About

We deliver Affordable Excellence by building valuable and usable digital products without missing the details that make them exceptional. We take ownership of every project, ensuring you get the attention and quality you deserve—on budget and on time. Read more We deliver Affordable Excellence by building valuable and usable digital products without missing the details that make them exceptional. We take ownership of every project,...

UpTop

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$25,000+ $150 - $199 / hr 1-10 Seattle, WA

Services Provided

15% Custom Software Development

15% Mobile App Development

70% UX/UI Design

About

UpTop helps enterprises improve and modernize their digital experiences, especially for service based and technology enabled companies. The agency focuses on transforming legacy systems, internal tools, and customer facing platforms into more intuitive and scalable solutions. Their goal is to enhance usability for both employees and customers through thoughtful UX and system redesign. UpTop helps enterprises improve and modernize their digital experiences, especially for service based and technology enabled companies. The agency focuses on transforming legacy systems, internal...

Singlemind

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$25,000+ $150 - $199 / hr 1-10 Portland, OR

Services Provided

20% Web Development

10% AI Development

10% Custom Software Development

+3 more services

30% Mobile App Development

20% UX/UI Design

10% Application Management...

About

Singlemind is an awarded software design and development agency that serves enterprises, innovative startups, and non-profit organizations around the globe. Our diverse, agile team has more than 15 years of success in designing and developing digital products (mobile apps, websites, web apps, etc). Our goal is to enable businesses to transform and thrive in today’s... Singlemind is an awarded software design and development agency that serves enterprises, innovative startups, and non-profit organizations around the globe. Our diverse, agile team has...

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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.