.NET development for custom software and applications
Whatever your .NET need is
Whether you're building a new .NET application, extending an existing system, modernizing legacy software, or looking for long-term .NET development and support, we can help through a Fixed Price Project or Continuous Monthly Development.
What .NET delivers
.NET is Microsoft's free, open-source development platform for building software that runs across Windows, macOS, Linux, iOS, and Android. It supports web applications (ASP.NET Core), mobile apps (.NET MAUI), APIs, microservices, cloud services, and desktop software.
The platform is backed by Microsoft and supported by a large developer community. Regular updates, thorough documentation, and abundant resources mean .NET stays current with security patches, performance improvements, and new capabilities.
.NET development services we provide
Custom web applications
We provide ASP.NET development services for business systems accessed through browsers: internal tools for operations such as client portals, dashboards, reporting platforms, and workflow management systems, built with ASP.NET Core for performance and cross-platform deployment.
Enterprise software
Complex applications handling significant data, users, and business logic. Inventory management, order processing, supply chain systems, HR platforms, and financial applications. .NET handles enterprise scale with proper architecture.
Mobile applications
Native iOS and Android apps from a shared C# codebase using .NET MAUI. Reduces duplication between platforms while maintaining native performance and access to device capabilities.
API development and microservices
Backend services that power web apps, mobile apps, or integrate with other systems. .NET's performance makes it suitable for high-traffic services.
System integration
Connect disparate business systems. ERP to CRM, accounting to inventory, ecommerce to fulfillment, proprietary systems to third-party services. .NET excels in middleware and integration layers.
Microsoft ecosystem integration
Custom add-ins for Office applications, SharePoint extensions, and Azure service implementations. .NET's native Microsoft platform integration simplifies these projects.
Legacy system modernization
Migrate aging applications to current .NET versions, rebuild outdated systems with modern architecture, and wrap legacy code in new interfaces.
Database-driven applications
Systems built around SQL Server, MySQL, PostgreSQL, or Azure databases. .NET's Entity Framework and database tooling make data-centric applications straightforward to develop and maintain.
.NET support and Continuous Monthly Development
Send tasks whenever they arise. With Care, everything runs in writing at one fixed monthly price: no estimates to approve, no cost overruns.
Care Plus gives you everything in Care at its own fixed monthly price, plus up to two hours of meetings per month with a Project Manager or any 1902 Software expert (for planning, advice and technical discussion) and up to two ongoing tasks at a time.
Care Ultimate is for ongoing engagements, often across multiple systems, that need close collaboration: a fixed price for every task or group of tasks, approved by you before work begins, people with the right expertise added to your project as your needs grow, and meetings with any 1902 Software expert whenever you need them (billed at the going project management rate for the actual time spent).
Typical work includes:
- Bug fixes
- New functionality
- Performance optimization
- Security improvements
- UI and UX improvements
- API development
- System integrations
- Database optimization
- Workflow automation
- AI implementation
- Technical advice
- Ongoing software support
Fixed Price Projects
For a single, well-defined .NET project (a new build, a major upgrade) you get one agreed price for the whole thing, fixed before work begins.
Typical projects include:
- Business systems
- Client portals
- Web applications
- API development
- Cloud applications
- Legacy system modernization
- Enterprise software
- Large integrations
Large projects typically start with a Project Scoping phase at an agreed, prepaid fixed price. The purpose is to precisely define what will be built and to establish the final price. This ensures full clarity for both you and us before development begins.
Taking over existing .NET applications
Many of our clients originally worked with another .NET development company.
We regularly take over existing .NET applications, business systems, and web applications, review the existing implementation and continue development with minimal disruption to your business.
Consulting & advisory
Many .NET projects begin with technical planning rather than development.
We regularly help businesses review existing applications, evaluate different technical approaches, define software requirements, and plan future development before implementation begins.
Who needs .NET development
Organizations with Microsoft infrastructure
Companies already running on Azure, SQL Server, Active Directory, or other Microsoft technologies. .NET integrates naturally with existing systems and builds on current technical investments.
Businesses requiring custom software
When off-the-shelf solutions don't fit specific workflows, data structures, or business rules. .NET provides flexibility to build exactly what you need without forcing processes into generic tools.
Companies needing Office integrations
Organizations wanting custom add-ins for Word, Excel, Outlook, or SharePoint. .NET is Microsoft's native development platform for extending these applications.
Enterprises with complex requirements
Large organizations with sophisticated business logic, multiple system integrations, high transaction volumes, or strict security requirements. .NET handles enterprise complexity.
Teams building cross-platform applications
Businesses wanting one codebase serving web, mobile, and desktop. .NET's cross-platform capabilities reduce duplication and maintenance burden.
Why choose .NET for custom development
.NET is Microsoft's mature, enterprise-grade platform: long-term support, strong security, first-class performance, and natural integration with the Microsoft ecosystem most businesses already run (Azure, SQL Server, Office 365, Active Directory). It scales from small internal tools to systems serving millions of requests, one platform for web, APIs, desktop and mobile.
How we use AI in our work
Our developers, designers, testers, and project managers use modern AI-assisted tools for planning, design, development, and testing. This results in higher quality and faster delivery. Every solution is still thoroughly reviewed, tested, and verified by experienced software developers and testers before delivery.
AI-powered solutions we build with .NET
Beyond using AI to accelerate development, we build AI-driven functionality directly into .NET applications:
Intelligent document processing
Extract data from invoices, receipts, forms, and documents automatically. Process unstructured information, classify documents, route approvals, and feed structured data into business systems.
Predictive analytics and forecasting
Analyze historical data to predict trends, forecast demand, identify risks, and recommend actions. Built into dashboards and applications where decision-makers need insights.
Natural language interfaces
Let users interact with complex systems using plain English instead of navigating forms and filters. AI parses intent and translates it into database queries or application actions.
Smart workflow automation
Automate decision-making processes that currently require human judgment. Route documents based on content, flag exceptions, prioritize tasks, and handle routine approvals automatically.
Recommendation engines
Suggest relevant products, content, or actions based on user behavior, preferences, and patterns. Personalize experiences without manual rule configuration.
Anomaly detection
Monitor systems, transactions, or data streams to identify unusual patterns that indicate fraud, errors, or opportunities. Alert humans when intervention is needed.
Intelligent search
Search that understands user intent, handles typos, learns from behavior, and surfaces relevant results instantly, powered by AI that improves over time.
These examples show what's possible. If you have an idea for how AI could improve your software, we'll help determine feasibility and implementation approach.
Let's discuss your .NET project
Whether you’re planning a new .NET application, improving an existing system, modernizing legacy software or looking for ongoing .NET development and support, we’d be happy to help.
Book a meeting and we’ll help you determine whether a Fixed Price Project, Continuous Monthly Development or a combination of both is the right approach for your .NET project.
Free, no-commitment
Commonly asked questions
Do you provide ongoing .NET support?
Yes. Continuous Monthly Development is our primary service for ongoing .NET development and support. It allows you to continuously improve your applications without requesting a quotation for every individual task.
Can you take over an existing .NET application?
Yes. We regularly take over .NET applications developed by other software development companies and continue development with minimal disruption to your business.
When does .NET make sense compared to other development platforms?
.NET is a strong fit when your organization already uses Microsoft infrastructure like Azure, SQL Server, or Active Directory, when you need cross-platform deployment from a single codebase, or when enterprise-scale performance and security are priorities. It also makes sense for Office integrations, complex business logic applications, and projects where long-term platform stability matters. If your requirements point toward a different ecosystem, we’ll recommend accordingly rather than forcing .NET onto every project.
Can you modernize or migrate legacy .NET applications?
Yes. We migrate aging applications to current .NET versions, rebuild outdated systems with modern architecture, and wrap legacy code in new interfaces where a full rewrite isn’t practical. Our team assesses the existing codebase first to determine the most practical migration path, whether that’s incremental modernization or a targeted rebuild of specific components.
What types of applications do you build with .NET?
We build custom web applications with ASP.NET Core, enterprise software handling complex business logic, mobile apps for iOS and Android using .NET MAUI, APIs and microservices, system integrations connecting disparate platforms, Microsoft Office add-ins, and database-driven business systems. The common thread is custom functionality built around your specific requirements rather than generic off-the-shelf tools.
How do you use AI in your development work?
AI-assisted, human-verified: every solution is thoroughly reviewed, tested, and verified by experienced software developers and testers before delivery.
What AI-powered features can be built into .NET applications?
We can integrate intelligent document processing, predictive analytics and forecasting, natural language interfaces, smart workflow automation, recommendation engines, anomaly detection, and intelligent search directly into .NET applications. These are custom-built for your specific use case. If you have an idea for how AI could improve your software, we can evaluate feasibility and plan the implementation.