Top .NET Companies

.NET Development - By the Numbers

• More than 35% of enterprise backend applications run on .NET, according to the JetBrains Developer Ecosystem Survey 2024
• C# ranks #4 on the TIOBE Index (2024), behind Python, C, and C++
• There are approximately 6 million .NET developers worldwide
• .NET 8 is the current Long-Term Support (LTS) release, supported until November 2026
• Average .NET developer hourly rate ranges from $80 to $200 per hour in North America; $40 to $80 in Eastern Europe
• 177 companies in this directory specialize in .NET development
• Microsoft has shipped .NET as open-source on GitHub since .NET Core 1.0 in 2016 - it is not a proprietary lock-in platform

What .NET Developers Do

ASP.NET Core Web APIs

The most common .NET engagement: building RESTful APIs that serve mobile apps, frontend SPAs, or other backend services. ASP.NET Core is cross-platform, runs on Linux in Docker containers, and is competitive with Node.js and Go on performance benchmarks. Developers implement controllers or minimal APIs, configure middleware pipelines, handle authentication (JWT, OAuth2), and integrate with databases via Entity Framework Core or Dapper.

Blazor Web Applications

Blazor lets .NET developers build interactive web UIs using C# and Razor syntax instead of JavaScript. It comes in two modes: Blazor Server (components run on the server, UI updates via SignalR) and Blazor WebAssembly (C# compiled to WASM running in the browser). Blazor is a practical choice for internal enterprise apps where the development team is .NET-focused and doesn't want to maintain a separate JavaScript frontend codebase.

Entity Framework Core and Database Access

EF Core is the standard ORM for .NET applications, supporting SQL Server, PostgreSQL, MySQL, SQLite, and others. Developers configure DbContext, design migrations, optimize queries, and handle complex scenarios like multi-tenancy, soft deletes, and audit logging. Dapper is a lighter alternative used for performance-critical query paths.

Microservices with Dapr and MassTransit

Larger .NET backends are often built as microservices communicating via message queues (RabbitMQ, Azure Service Bus, or Kafka). Dapr (Distributed Application Runtime) provides a sidecar pattern for service invocation, pub/sub, and state management. MassTransit is a message bus abstraction library that simplifies consumer patterns and saga orchestration for long-running business processes.

Windows Desktop (WPF and WinUI)

Windows Presentation Foundation (WPF) and WinUI 3 are the primary .NET options for Windows desktop applications. WPF is mature and widely deployed in enterprise LOB applications; WinUI 3 is the modern replacement with better performance and Windows 11 design support. Legacy WinForms applications are common targets for modernization.

Azure Integration

.NET has native Azure SDK support for the full Azure catalog. Common integration work includes Azure Functions (serverless event processing), Azure Service Bus, Azure Blob Storage, Azure Cosmos DB, Azure API Management, and Application Insights telemetry. .NET on Azure is the combination with the lowest integration friction - Microsoft builds and tests these SDKs internally.

SignalR for Real-Time Features

SignalR provides WebSocket-based real-time communication for .NET applications - live dashboards, chat, notifications, collaborative editing, or any feature where the server needs to push updates to connected clients without polling.

.NET MAUI (Cross-Platform Desktop and Mobile)

.NET MAUI (Multi-platform App UI) is the successor to Xamarin.Forms, shipping cross-platform apps from C# to iOS, Android, Windows, and macOS. It targets organizations with .NET expertise who need mobile apps without hiring Flutter or React Native developers.

Legacy .NET Framework Migration

Moving applications from .NET Framework 4.x to .NET 8 is a major service category. The migration path varies significantly by application - some ASP.NET MVC apps migrate in weeks with automated tooling, while enterprise apps with deep WCF dependencies, COM interop, or Windows-only APIs may require architectural rework. Consultants assess the migration scope before committing to a timeline.

.NET Development Costs and Pricing

• Hourly rate (North America): $100 to $200 per hour for senior developers; $80 to $130 for mid-level
• Hourly rate (Eastern Europe): $40 to $80 per hour for comparable experience
• REST API backend (standard CRUD, authentication, 3-5 integrations): $15,000 to $60,000
• Enterprise platform (multi-tenant, microservices, complex business logic): $100,000 to $1,000,000+
• Blazor internal web app: $20,000 to $80,000
• .NET Framework to .NET 8 migration assessment: $3,000 to $10,000 for a scoping assessment; full migration $20,000 to $200,000 depending on codebase size and complexity
• Ongoing development retainer: $8,000 to $30,000 per month for a dedicated team

How to Choose a .NET Development Partner

1. Ask which .NET version they build on today. Any agency building new projects on .NET Framework in 2025 without an explicit reason (e.g., required Windows-only dependency) is building on a dead end. .NET Framework will not receive new features and mainstream support has ended. New projects should be on .NET 8 (LTS) or .NET 9. If their default stack is still .NET Framework 4.8, ask why - the answer matters.
2. Verify Azure or cloud deployment experience. .NET applications overwhelmingly run on Azure in enterprise contexts. Confirm the partner has experience with Azure App Service or AKS deployment, Application Insights monitoring, Key Vault secret management, and Azure DevOps or GitHub Actions for CI/CD pipelines. A .NET shop that only deploys to on-premises Windows Server is a narrower choice.
3. Check their testing practices. Ask what percentage of code is covered by automated tests in a typical project, and which frameworks they use (xUnit, NUnit, Moq, FluentAssertions are standard). Ask whether they practice TDD (test-driven development) or write tests after implementation. Either approach is fine - what's not fine is shipping without tests.
4. Ask about code review and branching strategy. Mature .NET shops use pull request-based code review, protected main branches, and semantic versioning. Ask about their branching model (Git Flow, trunk-based, feature branches) and whether code review is a formal step before merging.
5. Request references from clients with similar technical scope. A company that builds data-heavy reporting applications is a different skill set from one that builds real-time event-driven systems. Match the reference request to your specific use case.

.NET Development - Frequently Asked Questions