Top Custom Software Development Companies & DevelopersJuly 4, 2025 |  Top Software Development Firms

1. Konstant Infosolutions:

https://www.konstantinfo.com

Konstant Infosolutions is a premier software development company, offering a wide range of web and mobile solutions across the globe since 2003. The company has a team of 180+ highly qualified and experienced IT professionals who can deliver best of technology solutions and consulting services across diverse business needs.

Services Provided by Konstant Infosolutions:

As a leading software development company, Konstant provides reliable web and mobile solutions spanning across Native Mobile Apps Development, Cross-Platform Mobile App Development, Custom Web Development, UI/UX Design Solutions, Artificial Intelligence, AR/VR Development, E-Commerce Solutions, Database Programming, CMS Development, Enterprise Mobility Solutions, Cloud Consulting and IT Consulting – offering businesses delightfully tailored and trendy solutions in their budget.

Key Clients: United Nations, Wonder Cement, Volkswagen, Stanley, Citrix, Project Action Star, RawBank, Houghton Mifflin Harcourt, ThomasVille, Scholastic, Nestle, NASSCOM, TABCO.Food and more.

Client’s Review:

“They delivered a functional platform that met guidelines and the client’s criteria as defined in the scope of work, ensuring timely delivery. The team was responsive to change requests and demonstrated an understanding of the vision, impressive communication skills, and expertise.” – Matthew C.

2. BairesDev:

https://www.bairesdev.com

We are the fastest growing Technology Solutions company in Latin America, with offices across the main cities in LATAM and the US. We have the largest applicants pool in the industry with over 145.000 Software Engineers applying to work with us each year, from which we hire only the Top 1% most talented through a rigorous staffing method. This is how we create solid teams of 100% bilingual veteran developers.

We work providing end-to-end delivery for companies of all sizes, from startups to some of the biggest companies in the world, leading projects for Google, Sirius XM, Volkswagen, Groupon, IBM & Viacom, among others. The heart of our work is Software Outsourcing, Testing and Operational Support which we provide through a service of fully managed teams that integrate seamlessly into your projects. We are a group led and guided by an Agile mentality. We are a firm founded and run by Developers. We are a company Powered by Technology and Driven by Talent.

Services Provided by BairesDev:

Software Outsourcing, Staff Augmentation,  UI/UX Design, Mobile, Quality Engineering, Software Support, Big Data, Gaming, MVP Development Services, Cloud Computing

Key Clients: SiriusXM, Google, Viacom, Groupon, Netgear, Univision, AP, Turner, IBM, Thomson Reuters, RightSide, Salesforce, Whirlpool, HP, BBVA, AdRoll, R/GA, Instructure, Leaf Group, iSeatz, EPublishing, BlackBoard, Roemmers, MuleSoft, Fresenius, Square, Kapsch, Gemalto, IPG Mediabrands

3. You are launched:

https://www.urlaunched.com

For the last 5  years, they launched over 70 startups and over 20 of them get to profit a year later. It means, that success probability is x95 more than the average number on the market. As a rule, all startups are reaching development shops to have their app developed. Despite the good stack of technical specialists, the Agile methodology that is used in dev shops is not the best solution for any startup. Each startup needs to save every penny. And that’s why the Lean Startup methodology, which is used by urlaunched is the best solution here. To share the best startup experience, urlaunched is hiring people with an entrepreneur set of minds. Such an approach allows them to deliver awesom

Services Provided by You are launched:

Mobile App Development, Software Development, UI/UX Design

Key Clients: Guestion Gauthier Construction, Autonomous Technologies, BeatBox-Interactive, Artecomis AG, Trace Inc, YogiBirth LLC, Elements Urn LLC, FoodFuels LLC, YouFirm

4. Simform:

https://www.simform.com

We’re a tech company with a mission to help successful companies extend their tech capacity. Founded in October 2010, we have helped organizations ranging from Startups that went public, to Fortune 500 companies, and WHO backed NGOs.

Simform helps companies become innovation leaders by delivering software teams on demand. We help you – choose the right technologies to invest in, decide on the best architecture and processes to follow, and oversee the successful delivery of their software projects.

Services Provided by Simform:

Custom software development, Enterprise mobile app development, Web application development, Cloud Migration and Management, Software testing, Dedicated development team, API integration

Key Clients: Sony Music (EMI), Pepsico, Zep Inc, Intralinks, Nxt-ID, FreeWire Inc, Accent Inc, Mission Rabies, GFSC Group Inc, TransAction Logistics, PUSH Inc, Sourcebits LLC, LSL Holdings Co, Fyul Inc, DoggyBnB, Drizzle Labs, Ed.life.

5. Cleveroad:

https://www.cleveroad.com

Cleveroad team is your reliable partner in software design and development. Starting with an idea, through requirements analysis to UI/UX design creation and development, we work hard to drive value into every project we undertake. Having delivered over 130 software solutions, we gained vast expertise in iOS, Android and Web apps development. We believe that creative thinking and collaborative approach to every step of development process delivers top-notch products.

Services Provided by Cleveroad:

Cleveroad provides full stack development services – mobile, web, desktop apps development, user-first UI/UX design, responsive web design, and development, backend integration, outstaff services.

Key Clients: DPD, HSBS, BET3000, Virgin Atlantic, PrankDial, MoneyWiz, Fuji HI, Octopus, Cartogram, Blockbuster

6. N-iX:

https://n-ix.com

Based out of Ukraine and Poland, N-iX is a software development partner since 2002. They provide end-to-end digital transformation services on the latest devices across all platforms. The team focuses on delivering scalable, secure and manageable solutions that are aesthetically appealing and render smooth UX. Developers at N-iX are well-versed with trending technologies including Big Data, Virtual Reality (VR), Machine Learning and AI, Blockchain, Data Science.

Services provided by N-iX:

Experts in software product development, game development, mobile application development, OpenText Profesisonal services, technical support, QA and testing, game art production.

7. STX Next:

https://stxnext.com

STX Next is a reliable long-term tech partner for startups, SMEs and corporations. We help startups launch a successful MVP and secure funding for further growth. We also guide SMEs through the process of digital transformation to automate their processes and boost customer satisfaction. For corporations, we’re ready to both accelerate existing projects through team extension as well as define, deliver, and deploy completely new projects.

STX Next has 17+ years of market experience and a roster of 400+ developers, UX designers, testers, DevOps engineers and other professionals. They have delivered over 700 projects for over 250 clients. STX Next’s core technology is Python, supplemented by JavaScript for frontend work and React Native for cross-platform mobile. They also have experience with the following technologies and frameworks: Django, Flask, Twisted, Angular, React, Node.js

Services Provided by STX Next: 

Web Development, Mobile App Development, Custom Software Development, Python Development, Javascript Development, AngularJS Development, React Native Development, Product Design, Web Design, UX/UI Design, Software Testing, DevOps

Key Clients: Hogarth, Unity, Lamden, DIGIT Game Studios, Blocktrade.com, Seerene, Pixomond

8. Django Stars:

https://djangostars.com

Since 2008, Django Stars has been a technical partner for software development and digital transformation. Whether you are a startup with fresh ideas, or a well-established business eager to transform, we’re ready to offer you solutions that can take you to the next level. Over more than 10 years of work, we’ve seen our clients grow from small startups to scalable enterprise companies – and celebrated every launch and success with them. And we’re eager to continue doing the same with you.

Services Provided by Django Stars:

Web Development, Mobile App Development, Crypto/Blockchain technology, Data Science, UI/UX Design, DevOps, Quality Assurance
Our technical stack: Python, Django, React, Redux, React Native, iOS, Android, Angular, PostgreSQL, MongoDB, Django REST Framework, Elastic Search, Asyncio, Docker, AWS, etc.

Key Clients:

9. Merixstudio:

https://www.merixstudio.com

We are a full-stack team of 120+ experts who build complex digital products for clients worldwide looking to outsource software development to professionals.

Merixstudio’s key expertise is the delivery of high-quality and performant web applications and cross-platform mobile apps. Based on the needs of our clients, we can support them in end-to-end product development or seamlessly extend their in-house team of engineers.

Our clients recognize us as a one-stop software development company with the ability to create a long-term design and development partnership. In return, we give them the best quality that stems from working with top-tier talents. We seek, recruit and develop the brightest engineers and designers locally creating an outstanding workplace for them. Check it out for yourself!

Services Provided by Merixstudio:

Merixstudio’s key expertise is the delivery of high-quality and performant web applications and cross-platform mobile apps. Based on the needs of our clients, we can support them in end-to-end product development or seamlessly extend their in-house team of engineers.

Key Clients: The Juilliard School, Toshiba, GS1, SendinBlue, RingCentral, FOX, Deutsche Post, HSBC, DFJ, Ferratum, Marks & Spencer, SFR, Orange, Credijusto, Volkswagen, The Independent, Tesco, Payback, Moneyfarm, Bronson Laboratories, Herald.ie, Virgin Digital Help, 123rf (part of Inmagine Group), Billabong, Divio, bookingkit, and more.

10. Infosys Public Services, Inc.:

https://www.infosyspublicservices.com

Infosys Public Services is a leader in business consulting, technology solutions, and next-generation digital services. We enable public sector organizations in the US and Canada to navigate their digital transformation journey.

Services Provided by Infosys Public Services, Inc.:

Data Analytics, Blockchain Services, Legacy Modernization, QA Testing, Cloud Services

Key Clients: Public Services Procurement Canada, Ministry of Transportation of Ontario

11. Fueled:

https://fueled.com

Fueled specializes in designing and developing noteworthy mobile apps and websites to upscale business growth and ROI. They also lend their expertise to deliver multifaceted industry solutions, including smart contracts, enterprise applications, coworking spaces, venture capital, and incubators. They provide versatile app development services and collaborate at every stage from design to deployment and maintenance.

The company enables its clients to leverage the strength and expertise of its diverse team, use technology to derive innovative solutions, and build a respectful environment to craft qualitative products. The company serves some of the most renowned companies and has delivered hundreds of projects to date.

Services Provided by Fueled:

Android App Development, iOS App Development, Digital Transformation, Web Development, Smart Contract, Branding, Dapps, Web3 Development, Defi Development

12. WillowTree:

https://willowtreeapps.com

WillowTree is a new-gen design and app development company that builds AI-driven mobile and web applications. They deliver advanced tech solutions for various industries, including finance, health & wellness, travel & hospitality, food & beverage, media, retail, and eCommerce. This mobile app development company provides clients with some of the most experienced artificial intelligence experts to craft unique digital solutions.

They are your go-to digital partner that helps face complex challenges and harness the power of generative AI to strategize digital solutions using expertise in marketing, design, strategy, and engineering. Their teams leverage artificial intelligence to build human-centric designs for extraordinary outcomes and deliver top-notch user experiences.

Services Provided by WillowTree:

Strategy Consulting, Data & AI, Design & Creative, Product Development, Digital Marketing

13. Amazon Web Services:

https://aws.amazon.com/

Amazon Web Services (AWS) is a trailblazer in cloud computing, offering a vast range of AI tools designed to simplify enterprise adoption of machine learning. From automated speech recognition to fraud detection, AWS delivers cutting-edge solutions that cater to diverse industries. With innovation at its core, it continuously rolls out tools that make AI accessible and impactful for businesses worldwide.

Services Provided by Amazon Web Services:

Artificial Intelligence, Database Migrations, Cloud Migration, DevOps,

Key Clients: Neiman Marcus, Orangetheory Fitness, United Way, Noom, Tableau

14. Microsoft:

https://www.microsoft.com/

Microsoft’s strides in AI have redefined enterprise solutions. Through its deep collaboration with OpenAI, it has integrated advanced generative AI tools like intelligent copilots into its suite of products. Azure Cloud, supported by its supercomputing power, allows businesses to scale AI globally. The company’s innovative spirit ensures its leadership in empowering enterprises with practical AI applications.

Services Provided by Microsoft:

AI Development, Cloud Development, Game Development, Software Development

Key Clients: Adobe, Meta

15. Nvidia:

https://www.nvidia.com/

Nvidia’s lightning-fast GPUs are the backbone of compute-heavy AI applications, making it a pivotal player in the AI revolution. From generative AI to cybersecurity, Nvidia’s software suite empowers businesses to harness AI effectively. With partnerships and startup investments, the company is shaping the future of AI infrastructure and innovation.

Services Provided by Nvidia:

Artificial Intelligence, Data Center and Cloud Computing, Design and Simulation, Robotics and Edge Computing

Key Clients: Foxconn, Amazon, BMW

16. IBM:

https://www.ibm.com/

IBM’s legacy in AI shines through its Watson and Watsonx platforms, offering powerful solutions in conversational AI, machine learning, and automation. With a rich history of innovation and a partnership with MIT, IBM continues to push boundaries in Artificial Intelligence research. Its multi-cloud capabilities make it a go-to for enterprises seeking robust and flexible AI solutions.

Services Provided by IBM:

AI, Generative AI, Responsible AI, Cybersecurity, Quantum Computing, Machine Learning, AI Ethics, AIOps, DataOps, FinOps, DevOps

Key Clients: Westfield, Camping World, Vodafone,

17. Meta AI:

https://ai.meta.com/

Meta AI is a company owned by Meta (Facebook). Meta combines its expertise in social media with groundbreaking AI tools like Llama 3, an open-source large language model. Its AI assistant, Meta AI, seamlessly integrates into platforms like Facebook, Instagram, and WhatsApp. Transparent in its research and committed to accessibility, Meta makes Artificial Intelligence a natural part of everyday digital interactions.

Services Provided by Meta AI:

Artificial Intelligence

Key Clients: Westfield, Camping World, Vodafone,

18. Monstarlab:

https://monstar-lab.com

Monstarlab demonstrates its expertise in providing enterprise-level digital solutions and consultancy to its global clients. This Tokyo-based digital consultancy firm has worked with several renowned corporations and entrepreneurs and delivered thousands of projects. They have become one of the top product development firms; all credit goes to their resilience, quality services, and quick responsiveness.

The company is popular in the mobile and web development industry for its unique approach to engineering products, delivering services, and building a robust app development ecosystem. Considering the culture of continuous learning, adapting to new tech, and fostering innovation, Monstarlab is the perfect choice for your next project.

Services provided by Monstarlab:

Mobile App Development, Custom Software Development, Big Data and BI, IoT Development, IT Staff Augmentation

Key Clients: Fujitsu, Gardens by the Bay, CHR Hansen, HSBC, Shake Shack

19. Intellectsoft:

https://www.intellectsoft.net

Intellectsoft founded in 2007 and is famous for its intelligent software/ mobile solutions. Intellectsoft is a full-service custom software and mobile app development company that has an expensive set of competencies to meet the enterprise needs. Considered as the smart place to begin mobile application development. Offices located in Silicon Valley, New York, London, Oslo and Minsk. Client hire Intellectsoft for its honesty and authenticity through and through. Intellectsoft team has proven experience in developing enterprise solutions which gives them a unique insight for complex mobile app necessities. Because of its experience and expertise, Intellectsoft is also considered as one of the top player in the industry.

Services Provided by Intellectsoft:

Services provided by Intellectsoft are Enterprise-Focused and versatile. They deliver agile applications with the purpose of satisfying customer app development needs. Company has delivered more then 300 projects over world wide clients.

20. Big Drop Inc:

https://www.bigdropinc.com

There aren’t many web design firms with the recognition and industry-leading skill of Big Drop Inc. They are a full-service digital marketing agency that focuses primarily on web design, content development, animated video production, and content marketing. With one of the strongest professional staffs in the industry, Big Drop Inc can perform the same level of service as any other top-tier web design firm, and their work has earned many awards that the firm is very proud to showcase. There are offices for Big Drop Inc in Europe and Los Angeles, and their headquarters are located in New York City.

Services Provided by Big Drop Inc:

Web design, Web Development, Branding, Marketing, Video Animations

Key Clients: