Given this, we have conducted an independent analysis of the companies based on reviews, services, and market visibility to determine which ones are worth mentioning. Of course, you are encouraged to study the top ratings on your own to make a well-informed decision. Following our rating, we will also provide tips on how to choose a reliable vendor for your custom software needs.

EPAM

A leading global provider of digital platform engineering and software development services. They mainly serve technology companies. The reviews consistently highlight EPAM's high-quality software development and engineering capabilities, customer service, responsiveness, and expertise as some of their core strengths. Customers particularly appreciated EPAM's understanding of business requirements, their ability to provide solutions that exceeded project objectives, and their dedication to delivering high-quality work.

Founded in 1993

Average hourly rate: —

Ronas IT

A Tallin, Estonia based software firm that offers full-cycle software development services, from business analysis and software design, through to testing, deployment and maintenance. The reviews for Ronas IT commend the company for its high-quality software and app development, website design, and server infrastructure services. Clients frequently highlight the timely and efficient delivery of services, strong responsiveness, and professionalism.

Founded in 2007

Average hourly rate: $50/h

Persistent

A global solutions company delivering digital business acceleration, enterprise modernization, and digital product engineering for businesses across all industries. The feedback shows a general satisfaction with the company's services, emphasizing their professionalism, adaptability, efficiency, and customer support.

Founded in 1990

Average hourly rate: —

Softtek

A global provider of IT services and business process solutions with more than 30 offices in North America, Latin America, Europe, and Asia. The company's services have resulted in efficient scaling of business operations, and significant enhancement of clients' business capabilities. Clients consistently praise Softtek's strong partnership, communication, and customer service. Some reviewers noted occasional gaps in expectations for some products/services, suggesting areas for improvement. Despite this, Softtek's willingness to work on resolving these issues was positively recognized.

Founded in 1982

Average hourly rate: —

Accenture

A leading global professional services company providing a broad range of services in strategy and consulting, interactive, technology and operations with digital capabilities across these services. Clients within various industries, from Energy to Finance, rate Accenture highly for its "One Team spirit", quality of engineers, and ability to deliver value. The company's ability to uniquely adapt and provide solutions tailored to customer needs is also praised. Furthermore, clients express high levels of satisfaction with Accenture's project delivery, collaboration, and overall service quality.

Founded in 2000

Average hourly rate: —

ELEKS

A software engineering consultancy that provides custom software development, product design, quality assurance, and technology consultancy services. The majority of reviewers highlighted ELEKS' excellent technical knowledge, customer service, and project management skills. They were praised for their dedication, professionalism, and ability to deliver complex projects on time. Many clients appreciated ELEKS' detailed and tailored approach to each project which resulted in enhanced business operations.

Founded in 1991

Average hourly rate: $50/h

ZAZZ

Zazz is a leading digital agency based in the USA that specializes in software and app development. They offer a wide range of services including UI/UX design, mobile and web app development, AI, and IoT solutions. With a team of experienced developers and designers, they aim to bring innovative ideas to life through cutting-edge technologies. They focus on developing user-centric digital experiences for a variety of clients, from startups to enterprises.

Founded in 2009

Average hourly rate: $50/h

Saigon Technology

A Vietnamese custom business software development company that offers software outsourcing and offshore software development services. Specifically, clients come from various sectors including retail clothing, research, transportation, education, literature, and even tax consultancy services. They provide a wide range of services including app development, web development, AI consulting, IT staff augmentation and more. Clients are impressed with the work quality, responsiveness, and overall value for money.

Founded in 2012

Average hourly rate: $35/h

You are launched

A product development company that helps to design and develop web and mobile applications for startups. You are launched typically adheres to the budget agreed upon and effectively manages project timelines. Their collaborative and efficient approach to work has garnered strong recommendations from clients across diverse industries. Whether it's developing a B2C iOS and Android mobile app, performing a thorough UI/UX review, producing clickable prototypes, or demonstrating strong project management skills, You are launched consistently meets client expectations.

Founded in 2016

Average hourly rate: $25–$49/h

Brainhub

A JavaScript custom business software development company that specializes in building web, mobile, and desktop applications. They are experts in React, Node.js, and other modern JS technologies. Clients who have engaged Brainhub's services across various industries including education, IT, finance, and software praise the agency for its technical prowess and results-driven approach. They have played critical roles in platform enhancements, software customization, and web and mobile app development.

Founded in 2015

Average hourly rate: $50–$99/h

Simform

A custom software development company. They help businesses with mobile app development, software testing, web app development, and developer augmentation. Clients have remarked on Simform's ability to challenge concepts, deliver on time, and constantly provide suggestions to improve the work. They've also been noted for their impressive skill sets, effective use of management tools like Slack, Jira, and Google Meet, and constant communication with clients.

Founded in 2010

Average hourly rate: $25–$49/h

Vention

Vention is a software development company that consistently receives high marks for its quality of work, scheduling, cost, and overall professionalism. Their services largely focus on custom software development, mobile app development, IT staff augmentation, and web development. The team is noted for their problem-solving abilities, flexibility, and ability to integrate well with existing teams. The firm's leadership was also commended for their impressive management skills. However, there were minor concerns about scheduling and cost. Overall, Vention's services are highly recommended by its clientele.

Founded in 2002

Average hourly rate: $50–$99/h

Merixstudio

A full-stack, Agile web development firm that delivers complex digital products. Provides services mainly in product design and software development. Their services have led to improvements in their clients’ operations, including increased user retention, generally improved customer satisfaction, quicker bug fixes, and improved operational efficiency. Merixstudio's team is appreciated for their dedication, talent, and their ability to quickly adapt to different industries.

Founded in 1999

Average hourly rate: $50–$99/h

Zealous System

A technology company from India providing services in web development, mobile app development, and IT consulting. They are known for their detail-oriented approach and commitment to creativity. Companies appreciate their quality of delivery, great value for money, dynamic resources, and excellent communication. Reviewers often mention the company's ability to deliver on time and on budget, as well as providing quality solutions.

Founded in 2008

Average hourly rate: $25/h

OpenXcell

An Indian custom business software development company providing services in mobile app development, software solutions, web & ecommerce, and testing & QA. One major recurring theme in the reviews is about how OpenXcell fosters long-term relationships with its clients and its responsiveness to client needs. Nonetheless, some customers expressed a desire for the company to improve in unspecified areas. Overall, the customers seem satisfied with the high-quality work produced and the collaborative approach to projects that OpenXcell takes.

Founded in 2009

Average hourly rate: $25/h

PieSoft

A software development and IT-consulting company. Their main services are consulting, development, and support of software in the field of financial technologies. PieSoft has received overwhelmingly positive reviews for their software development services in industries such as CRM, Insurance, Manufacturing, and many others. Customers appreciate PieSoft's technical expertise, professionalism, attention to detail, and commitment to delivering high-quality work.

Founded in 2012

Average hourly rate: $25–$49/h

AE Studio

A team of designers, developers, and data scientists that collaborate with clients to build innovative & impactful products. They specialize in rapid prototyping, data science & machine learning, full-stack software development, and intuitive UI/UX designs. A common theme in the reviews is AE Studio's contribution to the success and smooth delivery of projects. They stand out not only for their technical knowledge and capabilities but also for their procedures and management style. Their team demonstrates excellent communication, transparency, and flexibility, resulting in efficient and effective collaborations.

Founded in 2016

Average hourly rate: $200–$300/h

SoftServe

The feedback on SoftServe is overwhelmingly positive. Reviewers highlight the company's quality of work, reliability, flexibility, technical excellence and exceptional communication as key strengths. Their high level of talent is also frequently mentioned, with several reviewers pointing out their ability to recruit and retain top technical professionals. Reviewers also appreciate their partnership approach, with one stating that working with SoftServe feels more like a partnership than a vendor-client relationship.

Founded in 1993

Average hourly rate: —

Apptension

Apptension is a highly-regarded agency known for its proficiency in app and web development, eCommerce, product design, and other digital services. Reviews from clients consistently highlight the company's commitment to quality, timely delivery, and overall responsiveness. Clients range across various industries, from beauty and fashion to tech start-ups and consulting firms. A major plus point for clients is the agency's flexibility to handle intricate tasks within tight schedules and budget constraints, showcasing their commitment and capabilities in delivering complex products.

Founded in 2012

Average hourly rate: $58/h

Sapphire Solutions

A technology-driven dynamic custom business software development company that provides end-to-end solutions in the technology spectrum. Their offerings include Mobile App Development, Cloud Computing, IoT, and personalized software solutions. Reviews for Sapphire Solutions show it to be a highly appreciated software development company, especially among educational institutions including school and colleges. Customers generally praise the custom software development as it allows them to efficiently manage information related to students, workforce, finances, class schedules, and more.

Founded in 2002

Average hourly rate: —

Final thoughts on choosing a custom software development company

Choosing the right custom business software development company can become a game-changer for your future product's success. While making your selection, it is essential to observe certain key factors. Look for genuine reviews on platforms like those listed above. A relevant experience is desirable but not obligatory. Most significantly, lean towards a custom software development company that emphasizes transparency in processes and is ready to provide you with regular demos, unrestricted access to the task management system, and the ability to download your paid code and design at any time.

When you've made an initial choice, certain alarm signals should be noted. If you can't see the outcome for a long time, then something might be off. Good development practice indicates that demos should be shown every 2-3 weeks, not monthly. If, over time, the pace of progress slows down considerably or if you keep hearing positive comments without seeing any substantial results, be cautious.

For an enterprise, additional factors come into play — project timeline, communication transparency, quality of work, integration with the company processes, and staff training to understand the project. The idea here is not just to build a product, but to augment your entire business process through it. The right custom business software development company is one that aligns with your vision, values and above all, your business needs.

Therefore, patience and diligence are necessary in this selecting process. Combining through our list of the top 20 software development firms could be an excellent starting point for your search. The choice of a custom business software development company is a crucial one and could potentially make or break your product's future success. Therefore, choose wisely.