Custom Software Development for Your Business

Since 1985. For millions of users.

We transform businesses with agile engineering methods and custom programming solutions.

Don't settle for off-the-shelf software that doesn't meet your needs. Let Nexus help you take your business to the next level with custom software development. Contact us today to schedule a free consultation and see how we can help you achieve your goals.

Trusted by top companies
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Boost Your Productivity and Improve Customer Experience with Our Reliable and Scalable Solutions

End-to-end software development services tailored to your specific needs and budget ...

In today's fast-paced and competitive business world, having the right software can make all the difference. Whether you're looking to streamline your operations, automate your processes, or enhance your customer experience, our custom software development solutions can help you achieve your goals.

At Nexus Software Systems, we specialize in developing high-quality, reliable, and scalable software that meets the unique needs of your business. Our team of experienced software developers will work closely with you to understand your requirements, design a customized solution, and deliver a high-performing product that exceeds your expectations.

We offer end-to-end software development services, from initial concept and design to testing and deployment. Our expertise includes web development, enterprise software development, cloud-based solutions, and more.

Our commitment to quality, reliability, and security ensures that your software will be built to last, and our competitive pricing and flexible payment options make it affordable for businesses of all sizes.

Software Development Company

A leading software development company with 38 years of experience, we help businesses build customized solutions tailored to their unique needs. With our team of experienced designers, developers, and project managers, we deliver high-quality solutions that empower businesses to achieve their goals.

We're passionate about creating custom solutions that help businesses succeed. Whether you need a component, a complete enterprise system, or a web application, our team has the skills and experience to make it happen.

We offer a wide range of application services, including:

Software Development

Custom Applications: We specialize in building custom solutions that meet your business needs. From web and mobile applications to enterprise systems and cloud-based solutions, we've got you covered.

Software Support

Consulting: Our team of experts can help you with planning, architecture, and design. We work with you to identify your needs and create a roadmap for success.

Maintenance and Support: We provide ongoing maintenance and support to ensure your system is up-to-date, secure, and performing at its best.

Web Applications

Our Web application development services includes web engineering, web design, web content development, client-side/server-side scripting, eCommerce Web application development and web server management.


What our clients say
software development clients
software development client, Brian Patterson

Nexus Software Systems was a perfect choice for our custom Volusion website. We needed an online catalog for our extensive rental equipment, which wasn’t available from other Volusion vendors. Nexus Software created our online presence and provided us with direction on basic edits for additions and maintenance. They have also been a solid support resource for changes and problem solving, which we continue to utilize to this day.

Brian Patterson

Marketing Manager, AMP-Cherokee

software development client, Cathy Meyer

Nexus Software Systems is THE most competent & accessible/responsive developers I've come across in a decade. They come up with solutions that will SAVE your company so much in output costs that simply consulting with them is value all on its own. They work diligently to make sure you stay operational & have VAST knowledge of all the newest tech. PLUS they help maintain legacy code where needed. Hire Them!

Cathy Meyer

Director of Support & Services at HotComm

software development client, Kathryn Townsend

I spoke with many software development companies prior to choosing Nexus. Everything that I was promised was delivered completely and within a short period of time. Our new website is not only exactly what we wanted, it will last us for years. The developers at Nexus Software Systems are extremely helpful, very knowledgeable and patient!

Kathryn Townsend

President Greater Portland Board of Realtors, REALTOR of the Year.

software development client, Marty Karasick

Nexus has been servicing our site for more than 7 years. During that time, we have been completely satisfied with the attention they provide to small accounts as well as their fees and timeliness. We would recommend them to anyone.

Marty Karasick

Cast In Stone

software development client, Sarah Walters

We have enjoyed working with you over the course of the past five years, you have been an integral part of our growth.

Sarah Walters

Manager, World Travel Holdings

software development client, Melissa Lee

You provided us with an amazing solution. Our ecommerce system performs better than we could have imagined. The technical capabilities of the developers at Nexus Software is absolutely astounding. We are very happy with your work.

Melissa Lee


A software development company you can rely on

Since 1985, we have been the technical "brains" behind many successful businesses. With more than 12,000 projects delivered, we know what works and how to make it work for you. Your business' growth is our top priority. We'll help you achieve your business goals by listening and offering cost-effective solutions. When you're ready to enhance your business with a unique application, we think we'll be able to make you very happy.

Successful Projects Delivered

Successful Projects Delivered

Happy Clients

Happy Clients

Years of Experience

Years of Experience

Our Process:

We follow a proven process to ensure a successful outcome.

Our software development process is designed to be flexible and collaborative, ensuring that we deliver exactly what you need. We start by understanding your business objectives and then work with you to define the scope of the project. From there, we use agile development practices to ensure that you're involved in every step of the process and that the end result is exactly what you envisioned.

Here's how we do it:

  1. Discovery: We work closely with you to understand your business needs and identify the problem you're trying to solve.

  2. Design and Planning: Our team of architects design a detailed plan for your system's architecture that meets your specific requirements.

  3. Engineering: Our experienced engineers and developers build a customized solution that meets your needs and exceeds your expectations.

  4. Testing: We conduct rigorous testing to ensure your application is bug-free and meets all requirements.

  5. Deployment: We deploy the program on your servers or cloud infrastructure and provide ongoing support to ensure it runs smoothly.

Why Choose Nexus:

Get in Touch

Ready to get started? Contact us today to learn more about our services and how we can help your business achieve its goals.

Featured Services

Get High Converting Landing Pages with Custom Contact Forms to Drive Results Service

Get High Converting Landing Pages with Custom Contact Forms to Drive Results

Custom Contact Forms and landing page services that streamline communication and drive conversions.

Expert System Integration Services | Seamless Solutions for Your Business Service

Expert System Integration Services | Seamless Solutions for Your Business

Unlock the full potential of your business with our expert system integration services. Our seamless solutions ensure smooth data flow, efficient processes, and enhanced productivity.

IoT Software Development : Empowering Your Connected Future Service

IoT Software Development : Empowering Your Connected Future

Nexus is an IoT software development company that specializes in creating innovative solutions that power the Internet of Things ecosystem.

Specialized functionality is the smart choice for your business

Frequently Asked Questions

Unique Solutions

A unique application crafted to your specifications produces the most efficient system. It can provide support for the specific needs of your business that's not available off-the-shelf. Customized applications provide better performance, security and customer service.

A unique solution is a solution designed for a specific business. A system that is designed to address your particular needs as opposed to off-the-shelf products.

Customized programs help your business achieve unique requirements. For less than the cost of purchasing, maintaining and modifying commercial off-the-shelf programs. Having special system developed for your business is an essential asset. Specialized programs are more efficient and help to manage your processes.

Our development process is transparent and collaborative, and we keep you involved at every stage of the project to ensure that the final product meets your expectations. We use the latest technologies and best practices to ensure that our solutions are scalable, reliable, and secure.

Specialized functionality applied to business operations will magnify efficiency. Specialized functionality can integrate most major aspects of your business processes. And play an integral part in your business' operation and success. It will result in increased productivity and revenue. We'll help you develop specialized functionality that will provide a great return on your investment.

There are six factors that influence the cost of a unique application. These are features, complexity, the technology used, performance, scalability and time frame.

We take the time to understand your business requirements and work closely with you throughout the development process to ensure that we deliver high-quality, scalable, and secure solutions that exceed your expectations. Our commitment to excellence and attention to detail set us apart, and we are confident that you will be thrilled with the results.
Custom Software development Frequently Asked Questions
How Rust Empowers Web Development : Harnessing Performance and Safety

How Rust Empowers Web Development : Harnessing Performance and Safety

The Rust Programming Language is great for modern Web development.

Object-Oriented Design with C++: Building Robust and Modular Applications

Object-Oriented Design with C++: Building Robust and Modular Applications

Object-oriented Design (OOD) is a powerful pattern for building software that allows developers to create modular, reusable, and maintainable code.

SOLID Design Principles in C++: Enhancing Code Quality and Maintainability

SOLID Design Principles in C++: Enhancing Code Quality and Maintainability

Writing code that is flexible, maintainable, and easily extensible is crucial. One approach to achieving these goals is to adhere to the SOLID design principles.

Recognition and Awards

Top Rated Software Development Companies
Top Software Development Agency
Top Software Developers in Maine
Top Web Design Ecommerce Company in Maine
Top Web Developers in Maine
Intel Cloud Developers