
Are you looking for a leading custom web application development company in the USA? If so, then it’s the best decision you’ll make for your business. Custom web application development is the most profitable way for companies to grow online.
Web apps are now an integral part of the very nature of the internet. How people use the web has changed so much since its early days. Websites were essentially just digital brochures in the 90s, but now users access the internet to do stuff and not just read.
Therefore, you need top-notch custom web application development services to make the digital experience of your business interactive, and not just passive browsing.
This article is your go-to source to understand custom web apps. It will explain everything from what web apps are to how they work, and the technologies used to make them. Why they are important for businesses. And finally, it will list the top 10 custom web app development companies in the United States.
What is a web app?
When a common person hears the word “app”, the first thing that comes to their mind is a mobile app. That is because mobile apps are among the most widely used software programs today.
But there are roughly five to seven types of applications based on platform and tech type. A web application is a software program that is accessed through an internet browser. Web apps run on a remote server and are accessible over the internet, without any installation on the device.
In contrast, traditional apps like desktop or mobile apps require installation on the respective device. Moreover, web apps are platform-agnostic and can be accessed instantly from any browser, like Chrome, Firefox, or Safari, regardless of the platform you’re using.
How web apps work?

Web application developers design web apps using the client-server model. The client makes the request, and the server processes that request to send back what the client asked for.
In web application development, that means:
- Users access a web app through a browser, which is usually the client, to send a request to the server.
- The server, which is usually a web service, hosts the application logic and processes the request to respond.
For example, in a HealthTech web app. You log into the app and enter your credentials. The browser (client) sends a request to the server. If the credentials are correct, the server confirms the login is valid and responds by allowing access to your medical records, health indicators, and daily fitness routines.
Tech stack used for web app development
Most providers of custom web application development services use the following technologies.
- HTML, CSS, and JavaScript for frontend development
- Python, Ruby, Java, and PHP for backend development
- MySQL, Oracle DB, and PostgreSQL as databases, usually cloud-based for deployment
Why web apps are so important for business success?
When it comes to the internet, people mainly see it as a way to get information or to do some transactions. While that is a major part of the online experience, the web is really about accessing applications.
Most of what users do online today, from social networking to banking, happens through applications. Web applications are part and parcel of the modern online world. Even in situations where web apps are not explicitly involved, such as browsing on Wikipedia, web app-like interfaces are working behind the scenes to retrieve information.
Therefore, it is imperative for businesses to develop custom web apps if they want to grow their brand online.
The best companies offering custom web application development services in the USA
Companies require custom web apps built specifically for their business needs. These needs can be organizational or user-related. Enterprises in the USA particularly focus a lot on the personal preferences and requirements of their customers.
And like most things, the rest of the world is increasingly following America in this trend. Therefore, off-the-shelf web apps won’t cut the job. You need a custom application development company to craft tailored web apps if you want your product to achieve global success.
The US is the ideal place to meet your development needs because it has some of the most competent and professional custom web application development service providers.
Here we have gathered the 10 top custom web application development companies from around the USA. All these firms have proven expertise in developing custom web applications, qualified custom web app developers, and understand the business aspect of digital solutions as well.
1. Xavor Corporation
Headquarters: Irvine, California
Company size: 150–200 employees
Founded: 1995
Xavor Corporation is an American technology company based in Irvine, California. We have been active since 1995, and during that time we have worked with nearly every industry and technology.
Our web application development services create interactive, high-performing, and scalable web apps. As a modern application development service provider, Xavor’s software development lifecycle (SDLC) is fully aligned with the industry-standard best practices and modern era business processes.
We understand that web apps are the digital representation of our clients. That is why our web application developers focus on UI/UX, brand identity, and responsive design.
Services we offer
Custom web app development is a strategic process that starts with web development consultation and extends even after the app launch. We follow an Agile methodology to offer the following custom web application development services:
- Web development consulting services
- Enterprise web application development services
- Progressive web app (PWA) development
- MVP development
- AI-powered web app development
- Ecommerce web app development
- API integration and development
- Cloud-based web application development
- UI/UX design and prototyping
- Web app modernization and migration services
Technologies we use
Modern custom web development solutions require modern tools. Our web application developers are fully proficient in all the latest web app development tools, technologies, and frameworks, including:
- Cross-platform development: React Native, Flutter, and Xamarin
- Frontend development: HTML5, JavaScript, Angular, Vue.js, and Bootstrap
- Backend development: Node.js, Django, Laravel, Rails, and Spring Boot
- Cloud deployment: AWS, Azure, and Google Cloud for cloud deployment
- API-first development: GraphQL, RESTful APIs, and gRPC
- Databases: MySQL, PostgreSQL, Oracle DB, Mongo DB, and Redis
- DevOps: Docker, Ansible, Kubernetes, and Puppet
Contact information
Website: https://www.xavor.com/
Phone number: + 1949-264-1472
Email: [email protected]
Address: 2211 Michelson Drive, Suite 900, Irvine, CA 92612.
LinkedIn: https://www.linkedin.com/company/xavor
2. BPK Tech
Headquarters: Minnetonka, Minnesota
Company size: 150+ employees
Founded: 2007
BPK Tech is one of the best custom web application development companies in the United States. The company focuses on scalable apps and modern custom web development solutions that automate business operations and grow an enterprise.
The company also offers custom software development for mobile, desktop, and embedded systems. Their custom web application development services are HIPAA compliant, and they offer excellent customer support 24/7.
Services
- Custom software development
- API-first development
- Web application testing and quality assurance
- Data warehousing and integration
- KPI dashboards
Technology stack
- Objective C, C++, Rails, Swift, and Ruby
- Goland, Java, SQL, and XML
- PHP, Flutter, HTML5, and JavaScript
3. ScienceSoft
Headquarters: McKinney, Texas
Company size: 750+ employees
Founded: 1989
ScienceSoft has been delivering software application development services for 33 years. It is a mature and trusted technology company in the US that has served in more than thirty industries, including finance, manufacturing, and retail.
Moreover, the firm has released 1,900+ web apps. With such an impressive portfolio, their custom custom web application development services will deliver where it matters the most.
Services
- Web development and consulting
- Retail and supply chain management web app development
- Web portals and analytics web apps development
- FinTech web app development
- Custom web apps for customer management
Technology stack
- .NET, Java, PHP, and Python
- CSS3, HTML5, JavaScript, and Vue.js
- AWS, Azure, and Rackspace
- Docker, Kubernetes, Ansible
4. SideBench
Headquarters: Santa Monica, California
Company size: 50–100 employees
Founded: 2012
SideBench started as a digital agency, but it has expanded into a full-service tech consultancy and development firm. It is an award-winning web application development agency.
The company is still deeply rooted in its digital marketing origins and excels in web design, marketing, and UX-first web application development.
Services
- Mobile application development consulting services
- Full-stack custom web app development
- Digital strategy and UX design
- Quality assurance and support
Technology stack
- HTML5, CSS3, and JavaScript
- Flutter, Vue.js, Laravel, and PHP
- Python, Mongo DB, MySQL, and Node.js
5. Openxcell
Headquarters: Las Vegas, Nevada
Company size: 500+ employees
Founded: 2009
Next in our list is a web application development company right from Las Vegas. You may have only heard of the city for its casinos and vibrant night life, but it has a growing tech circle as well, especially for remote software developers.
Openxcell’s custom web application development services create modern, sleek, and progressive web apps with excellent client communication.
Services
- SaaS web app development
- Progressive web app development
- AI-powered web app development
- Web app support and maintenance
- Ecommerce web app development
Technology stack
- Java, PHP, .NET, and Golang
- React, Spring, Django, and Node.js
- HTML5, CSS3, and Angula
6. iTechArt Group
Headquarters: Manahawkin, New Jersey
Company size: 800–1600 employees
Founded: 2002
iTechArt Group has a huge talent pool of web application developers, software engineers, and business analysts. Founded in 2002, the custom software development company has delivered custom web apps to over 30 industries with a high customer satisfaction rate.
Their custom web application development services are consistently highly rated by B2B research and review sites like Clutch.
Services
- Custom software development services
- Startup web app development services
- Blockchain and IoT web app development
- Cloud-based web app development
Technology stack
- Java, Python, C, and C++
- HTML5, CSS3, and Angular
- Rails, Django, Oracle DB, and MySQL
7. Goji Labs
Headquarters: Los Angeles, California
Company size: 100–250 employees
Founded: 2014
Goji Labs was founded by two college friends as a startup web app development agency with one core objective in mind: helping non-technical startup founders meet their development needs.
A decade later, the company has helped more than 500 young businesses launch their digital products across multiple countries. The rapid growth of their custom web application development services is due to their strategy-first approach and customer-centric solutions.
Services
- Startup web app development
- Custom web app development services
- Product strategy and consulting
- Agile software development services
- Digital product audit services
- UI/UX design consulting
Technology stack
- React, Xamarin, Flutter, and Ionic
- PHP, JavaScript, and Node.js
- Angular, Vue.js, and HTML5
8. IntellectSoft
Headquarters: New York City, New York
Company size: 300–350 employees
Founded: 2007
IntellectSoft is a notable name in custom web application development services providers. The company analyses their client’s requirements to design compelling and user-friendly UI/UX web app design that is both easy-on-the-eye and well-functioning.
Moreover, IntellectSoft operates across multiple geographies, offering their clients flexible services in different time zones.
Services
- Custom web application development
- Enterprise web application development
- Web development consulting services
- Custom software development services
Technology stack
- PHP, Python, Ruby, and Symfony
- AngualrJS, React, JavaScript, and NodeJS
- jQuery, Mongo DB, and MySQL
9. Rootstrap
Headquarters: West Hollywood, California
Company size: 200–250 employees
Founded: 2011
Rootstrap’s custom web application development services focus on bringing the best possible solution to the table. The US-based company excels in developing a scalable architecture for their custom web apps and implements fool-proof web security features.
Product Studio is one of their main engagement models for full-cycle development. It consists of their engineers, designers, and product managers that take complete ownership of your digital product from start to finish.
Services
- Custom web app development
- Web app design and strategy
- Mobile web app development
Technology stack
- Ruby, NodeJS, AngularJS, and React
- HTML5, CSS3, and JavaScript
- Python, PHP, and C++
10. Icreon
Headquarters: New York City, New York
Company size: 350–500 employees
Founded: 2000
The last member of our list of top custom web application development services is a bit different. Iceron is primarily a customer experience agency that also offers custom web application development services.
Iceron brands itself as a digital velocity partner, helping its clients move faster and smarter. Their custom web application development services are just one of their modules for this objective.
Services
- Custom software development
- Enterprise mergers and acquisitions
- Digitral product strategy and consulting
Technology stack
- MySQL, jQuery, ASP.NET, and C#
- Angular, Vue.js, and JavaScript
- HTML5, CSS3, and Django
Conclusion
Perception matters. Once a customer enters your physical store, they develop a first impression about your business from the onset. Same implies to the digital front of your business, which includes your website or web application.
Custom web applications serve your enterprise 24/7 like no employee does. The experience they provide to users promotes your business and builds your reputation as a forward-looking brand. However, there is no one right answer to most web application development needs.
You need custom web application development services to first find what works for you and then execute it to perfection. Xavor’s custom web app development services aim for the best design and functionality for your web app.
Our developers use the industry standard tools and technologies to create web experiences that your customers enjoy. Contact us at [email protected] to learn more about our web app solutions.