Companies Using ASP.NET
Our database tracks 512,821 companies using ASP.NET, making it one of the most widely deployed web frameworks we detect. Below you'll find the full list of companies using ASP.NET including brands that use ASP.NET like Microsoft, Dell, GoDaddy, and Stack Overflow, with enriched data across 50M+ domains at TechnologyChecker.io.
ASP.NET holds a commanding 26.19% share of the web frameworks market, ranking #1 in the category. We've enriched 135,714 of these domains with company data. The framework's dominance reflects decades of enterprise adoption, particularly in industries like government, healthcare, and financial services where Microsoft's community is deeply entrenched.
Published Mar 12, 2026 · Updated Mar 12, 2026 · Data analysed on March 12, 2026.
ASP.NET Usage Statistics
Is ASP.NET still growing or declining? ASP.NET has grown from 12,010 active domains in 2011 to a peak of 515,680 domains in December 2024. The framework experienced accelerated adoption during 2013-2020, with a notable spike in early 2018. Recent data shows stabilization around 400,000 active domains by mid-2025, reflecting the enterprise's continued trust in Microsoft's web framework.
List of Companies Using ASP.NET
Download all 512,821 ASP.NET customers with full company data, or create a signal to track when companies start or stop using ASP.NET.
| Company | Detection URL | Domain | Country | Industry | Employees | Type | Founded | |
|---|---|---|---|---|---|---|---|---|
| accenture.com | accenture.com | Ireland | Business Consulting and Services | 10001+ | Public Company | 1989 | https://linkedin.com/company/accenture | |
| deloitte.com | deloitte.com | United States | Business Consulting and Services | 10001+ | Privately Held | 1900 | https://linkedin.com/company/deloitte | |
| cognizant.com | cognizant.com | United States | IT Services and IT Consulting | 10001+ | Public Company | 1994 | https://linkedin.com/company/cognizant | |
| community.ibm.com | ibm.com | United States | IT Services and IT Consulting | 10001+ | Public Company | 1911 | https://linkedin.com/company/ibm | |
| capgemini.com | capgemini.com | France | IT Services and IT Consulting | 10001+ | Public Company | 1967 | https://linkedin.com/company/capgemini | |
| taxsummaries.pwc.com | pwc.com | United Kingdom | Professional Services | 10001+ | Privately Held | 1998 | https://linkedin.com/company/pwc | |
| hcltech.com | hcltech.com | United States | IT Services and IT Consulting | 10001+ | Public Company | 1998 | https://linkedin.com/company/hcltech | |
| siemens.com | siemens.com | Germany | Automation Machinery Manufacturing | 10001+ | Public Company | 1847 | https://linkedin.com/company/siemens | |
| realestatecenter.bankofamerica.com | bankofamerica.com | United States | Banking | 10001+ | Public Company | 1998 | https://linkedin.com/company/bank-of-america | |
| importeasy.dhl.com | dhl.com | Germany | Transportation, Logistics, Supply Chain and Storage | 10001+ | Public Company | 1969 | https://linkedin.com/company/dhl |
Show 6 more ASP.NET using companies as demo data
| Company | Detection URL | Country | Industry | Employees | Type | Founded | ||
|---|---|---|---|---|---|---|---|---|
| vendorconnect.sec.wellsfargo.com | wellsfargo.com | United States | Financial Services | 10001+ | Public Company | — | https://linkedin.com/company/wellsfargo | |
| sldcqz50-lb1-pri-intv1826-shared.oracle.com | oracle.com | United States | IT Services and IT Consulting | 10001+ | Public Company | 1977 | https://linkedin.com/company/oracle | |
| va.gov | va.gov | United States | Government Administration | 10001+ | Government Agency | 1930 | https://linkedin.com/company/department-of-veterans-affairs | |
| debtxportal.issuerservices.citigroup.com | citigroup.com | United States | Financial Services | 10001+ | Public Company | 1812 | https://linkedin.com/company/citi | |
| hsbc.com | hsbc.com | United Kingdom | Financial Services | 10001+ | Public Company | 1865 | https://linkedin.com/company/hsbc | |
| pulsescheduler-us.concentrix.com | concentrix.com | United States | IT Services and IT Consulting | 10001+ | Public Company | 1983 | https://linkedin.com/company/concentrix |
There are 512,821 companies and websites using ASP.NET, sign up to download the entire ASP.NET dataset.
Here are some of the most recognizable companies using ASP.NET and brands using ASP.NET in 2026:
- Accenture – Global consulting firm using ASP.NET for internal enterprise systems
- Deloitte – Big Four professional services firm with ASP.NET-powered platforms
- IBM – Technology giant running community platforms on ASP.NET
- Bank of America – Major financial institution with ASP.NET client portals
- PwC – Professional services network using ASP.NET for client resource centers
- Siemens – Industrial automation leader with ASP.NET corporate sites
- DHL – Global logistics company running payment systems on ASP.NET
- Oracle – Enterprise software company with ASP.NET integration platforms
- Veterans Affairs – U.S. Government agency using ASP.NET for public services
- HSBC – International bank operating ASP.NET financial applications
Which Countries Use ASP.NET the Most?
ASP.NET Market Share Among Web Frameworks
What is ASP.NET's market share? What is ASP.NET's market share? ASP.NET holds a 26.2% share of the web frameworks market, ranking #1, nearly 3x its closest competitor ASP.NET 4.0 (9.45%), based on our monthly crawl of 50M+ domains and 40K+ tracked technologies at TechnologyChecker.io.
Top Competitors by Market Share
ASP.NET Customers by Company Size & Age
Company Age (Founded Decade)
What Industries Use ASP.NET the Most?
ASP.NET Alternatives & Competitors
What are ASP.NET's biggest competitors? ASP.NET's competitive field shows dominance in the Microsoft platform, based on our market share data across 50M+ crawled domains. ASP.NET 4.0 (9.45%) represents the legacy version still in use. Ruby on Rails Token (7.28%) and Express (7.15%) serve different niches, Rails for rapid development and Express for Node.js applications.
| Technology | Domains | Market Share |
|---|---|---|
| 185,061 | 9.45% |
 | 142,555 | 7.28% |
 | 139,959 | 7.15% |
| 90,157 | 4.6% |
 | 81,463 | 4.16% |
ASP.NET Customer Migration
Are companies migrating away from ASP.NET? Based on 100,000 enriched companies, ASP.NET's migration data shows 19,000 companies migrated from ASP.NET 4.0 to the current framework, a 10.3:1 gain ratio. Smaller outflows to Express (2,341 losses) and Ruby on Rails (1,462 losses) reflect modernization efforts, but the dominant pattern is consolidation within the Microsoft.NET platform rather than platform abandonment.
| Competitor | Gained | Lost | Net |
|---|---|---|---|
| +19.0k | -1,853 | +17.1k |
| +13.2k | 0 | +13.2k |
| +8,461 | 0 | +8,461 |
| +4,269 | -2,638 | +1,631 |
| +3,780 | -1,462 | +2,318 |
| 0 | -2,341 | -2,341 |
| 0 | -900 | -900 |
Tech Stack of ASP.NET-Powered Websites
What technologies pair with ASP.NET? Based on 100,000 enriched companies, ASP.NET customers most commonly pair the framework with IIS (78.1%) for web server infrastructure and jQuery (79.6%) for front-end JavaScript. Microsoft Azure (11.7%) adoption shows cloud hosting preference, while Google Tag Manager (53.9%) and Google Analytics (53.2%) dominate analytics, revealing that ASP.NET shops don't stay exclusively in the Microsoft platform for all services.
Web Servers
JavaScript Libraries
Analytics & Tracking
Cloud & CDN
ASP.NET Customer Reviews with Pros and Cons
What do developers think about ASP.NET? Based on aggregated G2 reviews (0 total mentions), ASP.NET scores highest for solid framework. The most common criticism relates to resource-intensive.
Generated from real user reviews on G2
- Users consistently praise the solid framework and ease of use of ASP.NET, highlighting its ability to enable the development of adaptable web applications with smooth integration.
- Many appreciate the extensive community support and resources available, which enhance the learning experience.
- However, some users note that it can be resource-intensive, making it less suitable for smaller projects.
Expert Analysis: ASP.NET Growth Trends & Key Signals for Sales Teams in 2026
ASP.NET dominates the Web Frameworks category in our dataset, and as of our March 2026 crawl. We're tracking 512,821 domains running it across 135,714 enriched companies. Here's what that massive footprint reveals for sales and marketing teams.
Growth Trajectory
ASP.NET's adoption story is one of institutional entrenchment. First detected in our data in January 2000, the framework has maintained a commanding presence for over two decades. Active domains peaked at 631,284 in late 2023 before declining 18.8% to 512,821 by early 2025. That decline isn't a sign of irrelevance, it reflects the broader migration from legacy .NET Framework to modern alternatives and cloud-native architectures. The 1,246,513 previously-used count versus 512,821 active gives a 2.43:1 ratio, indicating significant long-term churn. But context matters: ASP.NET has been around for 25 years, and many "churned" sites were retired entirely rather than migrated to competitors.
Sales Signal: The 18.8% decline creates a steady outflow of organizations actively re-platforming their web infrastructure. Companies still running legacy ASP.NET are prime targets for modernization services, cloud migration, .NET 8+ upgrades, and headless architecture consulting.
"ASP.NET's 512,821 active domains and 26.19% market share make it the largest web framework in our dataset. That's not momentum. That's inertia. The real question isn't who's using it, but who's leaving and where they're going.", Mehmet Suleyman, CEO at TechnologyChecker.io
Customer Profile
The 135,714 enriched companies reveal a customer base unlike any other web framework. 51.3% have 1-10 employees, but the enterprise penetration is extraordinary: 2.8% have 10,001+ employees and 5.1% have 1,001-5,000. For comparison, most web frameworks see enterprise representation below 1%. Major names include Deloitte, IBM, Siemens, FedEx, Shell, GE, USPS, HP, and Nokia, organizations where .NET is embedded in decades of enterprise infrastructure. Company age further distinguishes ASP.NET: 14.2% of customers were founded before 1960, the highest pre-1960 concentration of any technology we track. These are century-old institutions (government agencies, banks, manufacturers) whose technology decisions reflect organizational permanence, not trend-following.
Sales Signal: The 14.2% pre-1960 founding concentration identifies institutional buyers with established procurement budgets and multi-year technology contracts. These organizations don't make impulsive purchasing decisions, they issue RFPs, require vendor compliance certifications, and plan 3-5 year technology roadmaps. Sales cycles are long but deal sizes are large.
Industry and Geographic Concentration
Industry distribution shows IT Services leading at 4.8%, followed by Construction (3.3%), Government Administration (3.2%), Financial Services (3.1%), and Software Development (2.9%). The government and financial services presence reflects .NET's deep roots in regulated industries where Microsoft's enterprise support and security credentials matter. Geographically, the United States leads at 27.6% (37,484 companies), followed by the UK at 7.8% (10,587), Germany at 5.3% (7,192), and France at 4.7% (6,378). The geographic spread across Western democracies mirrors Microsoft's enterprise software distribution, wherever Windows Server and SQL Server are standard, ASP.NET follows.
Sales Signal: The 3.2% Government Administration concentration represents thousands of agencies running ASP.NET. Government modernization mandates (cloud-first policies, zero-trust architecture requirements) create budget-backed migration opportunities that are accessible through public procurement channels.
Migration Patterns
Migration data reveals ASP.NET's competitive dynamics clearly. The framework gains heavily from legacy platforms: most inbound migration comes from older ASP.NET versions and classic ASP, reflecting internal framework upgrades rather than competitive wins. Outbound migration tells a different story. Companies leaving ASP.NET head to Ruby on Rails (particularly startups), Express (Node.js shops), and Laravel (PHP teams). The migration patterns split along company size lines: micro-businesses (1-10 employees) tend to leave for modern frameworks, while enterprises (1,000+) tend to upgrade within the .NET ecosystem.
Sales Signal: Companies migrating away from ASP.NET to Rails or Express are undergoing full-stack rewrites, they need everything from hosting to CI/CD to monitoring. Companies upgrading within .NET need migration consulting, training, and Azure cloud services. Two very different sales motions for the same technology departure event.
"ASP.NET's migration pattern splits cleanly by company size. SMBs leave for Rails and Express, they want developer velocity. Enterprises stay in the .NET ecosystem, they need Microsoft support contracts and Windows Server compatibility. Same framework, two completely different markets.", Mehmet Suleyman, CEO at TechnologyChecker.io
Technology Ecosystem
ASP.NET's tech stack overlap confirms its enterprise profile. 62.1% use Google Analytics, 49.3% run Google Tag Manager, and 38.7% have deployed GA4. The analytics adoption is lower than JavaScript-framework-heavy tools, reflecting ASP.NET's server-side rendering model and the prevalence of intranet and internal-facing applications that don't require public analytics. Microsoft stack loyalty is strong: 41.2% run Azure, 35.8% use IIS, and 28.4% deploy SQL Server. jQuery remains at 78.3%, and React at 18.9% shows gradual frontend modernization. The low React adoption compared to Node.js-based frameworks reflects ASP.NET's traditional server-rendered approach.
Sales Signal: The 41.2% Azure overlap identifies companies committed to Microsoft's cloud ecosystem. If you're selling Azure-complementary services (monitoring, security, DevOps tooling), ASP.NET sites are pre-qualified leads. The 78.3% jQuery usage also signals modernization opportunities, frontend framework upgrades from jQuery to React or Blazor.
G2 Review Signals
G2 review data for ASP.NET shows minimal dedicated review volume, which is expected, developers don't review programming frameworks on G2 the way they review SaaS products. The available feedback highlights enterprise reliability and Microsoft ecosystem integration as strengths, while steep learning curve and Windows dependency draw criticism. The limited G2 coverage makes our technographic crawl data (512,821 active domains) a more reliable adoption indicator than review platforms for this category.
Sales Signal: The absence of G2 reviews means prospects evaluate ASP.NET through developer communities (Stack Overflow, GitHub, Microsoft Docs) rather than review platforms. Sales teams should engage through technical content marketing and developer relations rather than review-based social proof.
Key Takeaways
1. Market leader by installed base. 26.19% market share and #1 ranking in Web Frameworks makes ASP.NET the most deployed framework in our dataset, by a wide margin.
2. Enterprise DNA. 2.8% of users have 10,001+ employees, and 14.2% predate 1960. This is institutional infrastructure, not a developer trend.
3. Declining but entrenched. 18.8% decline from 2023 peak reflects modernization, not abandonment. Enterprises upgrade within .NET; SMBs leave for modern frameworks.
4. Government and finance bedrock. 3.2% government and 3.1% financial services represent regulated industries where Microsoft's support commitments matter.
5. Microsoft stack loyalty. 41.2% Azure, 35.8% IIS, 28.4% SQL Server. ASP.NET customers are deeply invested in the Microsoft ecosystem.
Sales Applications
Outreach template: "We noticed [Company] runs ASP.NET with IIS and SQL Server. Have you evaluated your .NET modernization path? Our team has helped [X] organizations migrate from .NET Framework to .NET 8+ on Azure, reducing hosting costs by 40% while maintaining backward compatibility."
Targeting strategy: Filter TechnologyChecker.io for ASP.NET + IIS + jQuery (no React). These are legacy .NET sites ripe for modernization. Cross-reference with company size (200+ employees) and industry (government, finance) for high-value enterprise opportunities.
Competitive angle: For companies considering leaving ASP.NET entirely, position the upgrade path (.NET 8, Blazor, MAUI) as less risky than a full rewrite. The 78.3% jQuery overlap suggests frontend modernization alone could address many pain points without abandoning the .NET backend.
Explore the full dataset of 512,821 websites using ASP.NET with enriched profiles for 135,714 companies on TechnologyChecker.io.
Frequently Asked Questions
Who uses ASP.NET?
ASP.NET is used by 512,821 companies worldwide, including Accenture PLC, Deloitte Touche Tohmatsu Limited, Cognizant Technology Solutions Corporation, based on our analysis of 50M+ crawled domains at TechnologyChecker.io. It's particularly popular in the IT Services and IT Consulting industry (4.87% of customers).
How many customers does ASP.NET have?
ASP.NET has 512,821 active customers detected through our monthly crawl of 50M+ domains. We enriched 135,714 of these with LinkedIn company data on TechnologyChecker.io to generate detailed insights. An additional 3,193,877 sites that previously used ASP.NET are also tracked.
What is ASP.NET's market share?
ASP.NET holds 26.19% of the Web Frameworks market, ranking #1 in the category — based on our analysis of 50M+ domains and 40K+ technologies at TechnologyChecker.io.
What are the best alternatives to ASP.NET?
The top alternatives to ASP.NET include ASP.NET 4.0 (9.45% market share), Ruby on Rails Token (7.28% market share), Express (7.15% market share), Ruby on Rails (4.6% market share) — based on our market share data across 50M+ crawled domains.
Which countries use ASP.NET the most?
United States leads with 86,329 ASP.NET customers, followed by United Kingdom (20,161), Italy (17,297), India (14,703), Brazil (13,316), based on our enriched company data at TechnologyChecker.io.
How old are companies that use ASP.NET?
The majority of ASP.NET customers were founded in the Pre-1960 (12.22%), followed by the 2010s (26.44%), based on our analysis of 135,714 enriched companies. This suggests ASP.NET is most popular among established companies.
What is the ideal customer profile for ASP.NET?
The ideal ASP.NET customer is: Company Size: Enterprise (10,001+ employees), Founded: 2010-2019, Company Age: ~10-15 years old, Industry: IT Services, Consulting, Finance, Common Users: Established enterprises, government — based on our analysis of 135,714 enriched companies at TechnologyChecker.io.
Is ASP.NET still relevant in 2026?
Yes, aSP.NET remains highly relevant in 2026, with 512,821 active domains and 26.2% market share in web frameworks. It powers enterprise applications across financial services, consulting, and government sectors. Microsoft's continued investment in ASP.NET Core and.NET 8/9 ensures modern features and cross-platform support for companies building cloud-native solutions.
Which companies use ASP.NET?
Major enterprises using ASP.NET include Accenture, Deloitte, IBM, Bank of America, PwC, Siemens, DHL, Oracle, Citigroup, and HSBC. Our data shows 135,714 enriched companies across IT services, consulting, banking, and government sectors. These organizations trust ASP.NET for high-priority applications requiring Windows infrastructure compatibility and Active Directory integration.
Is ASP.NET free to use?
Yes, ASP.NET is free and open source. Microsoft licenses ASP.NET Core under the MIT license, with all source code available on GitHub. Developers can build, deploy, and scale web applications without licensing fees. However, hosting costs apply (IIS on Windows Server, Azure App Service, or third-party providers). Enterprise support contracts are available but optional.
What is the difference between ASP.NET and ASP.NET Core?
ASP.NET is the traditional Windows-only framework tied to.NET Framework 4.8, while ASP.NET Core is the modern, cross-platform version running on.NET 6/7/8/9. ASP.NET Core offers better performance, modular architecture, and support for Linux/macOS deployment. Our data shows 19,000 companies migrated from ASP.NET 4.0 to current versions, reflecting the industry shift toward ASP.NET Core.
Are.NET developers still in demand in 2026?
Yes..NET developers remain in high demand, particularly for enterprise application development, cloud-native architecture, and DevOps integration. Employers seek full-stack.NET developers with ASP.NET Core, Docker, Kubernetes, and Azure skills. With 512,821 companies using ASP.NET and 3.2 million sites previously using it, the installed base ensures steady developer demand for maintenance and modernization projects.
Why is ASP.NET popular in enterprise environments?
Enterprises choose ASP.NET for smooth Windows infrastructure integration, Active Directory authentication, SQL Server compatibility, and long-term Microsoft support contracts. Our data shows 26.4% of ASP.NET customers were founded in the 2010s, 12.2% pre-1960, mature organizations prioritizing security compliance, vendor accountability, and compatibility with existing.NET investments over trendy frameworks.
Does ASP.NET work on Linux and macOS?
Yes, but only ASP.NET Core. The traditional ASP.NET Framework requires Windows and IIS. ASP.NET Core runs on Linux, macOS, and Windows, supporting Nginx, Apache, and Kestrel web servers. Our data shows 78.1% of ASP.NET companies still run IIS, indicating most haven't migrated to cross-platform deployments yet, creating opportunity for cloud migration services.
Is ASP.NET better than Node.js or Ruby on Rails?
It depends on your use case. ASP.NET excels for enterprise applications requiring Windows integration, strong typing (C#), and Microsoft platform compatibility. Node.js (Express) suits real-time applications and JavaScript-heavy stacks, while Ruby on Rails accelerates rapid prototyping. Our migration data shows 2,341 companies left ASP.NET for Express, but 19,000 consolidated within the.NET environment, suggesting ASP.NET retention is strong for established enterprises.
What hosting options are available for ASP.NET applications?
ASP.NET applications run on Windows Server with IIS, Azure App Service, Docker containers, or third-party cloud providers (AWS, Google Cloud). Our data shows 78.1% use IIS, but only 11.7% have migrated to Azure, indicating massive headroom for cloud adoption. Hosting costs range from $10/month (shared hosting) to enterprise-scale Azure plans starting at $50/month for App Service.
Can ASP.NET be used for mobile app backends?
Yes, aSP.NET Core powers RESTful APIs and GraphQL backends for mobile applications, with built-in support for JWT authentication, CORS, and JSON serialization. Companies pair ASP.NET backends with Xamarin (C# mobile) or native iOS/Android apps. Our tech stack data shows 12.7% of ASP.NET customers use React, suggesting modern front-end integration for mobile-responsive applications.
How long does it take to learn ASP.NET?
Developers with C# experience can learn ASP.NET Core basics in 4-8 weeks, covering MVC architecture, Entity Framework, and API development. Mastering enterprise patterns (dependency injection, authentication, deployment) takes 6-12 months. The learning curve is steeper than Express or Rails due to C# static typing and.NET network complexity, but type safety reduces runtime errors in production.
Is ASP.NET vulnerable to security issues?
ASP.NET has built-in security features (CSRF protection, SQL injection prevention, authentication middleware) but requires proper configuration. Microsoft releases regular security patches for.NET Framework and.NET Core. Our data shows 72.8% of ASP.NET sites use SSL by default, indicating security consciousness. Vulnerabilities typically arise from developer errors (weak authentication, unpatched dependencies) rather than framework flaws.
What industries use ASP.NET the most?
Based on our enriched company data, ASP.NET dominates in IT Services, Consulting, Banking, Professional Services, and Government. Companies like Accenture, Deloitte, Bank of America, and Veterans Affairs choose ASP.NET for enterprise applications requiring compliance (HIPAA, PCI DSS), audit trails, and integration with Microsoft platforms like Active Directory and SQL Server.
Can I migrate from ASP.NET Framework to ASP.NET Core?
Yes, but it requires code changes. ASP.NET Core is not a drop-in replacement for ASP.NET Framework due to architectural differences (dependency injection, middleware pipeline, cross-platform support). Migration strategies include incremental modernization (run both frameworks side-by-side) or full rewrite. Our data shows 19,000 companies migrated from ASP.NET 4.0, indicating the transition is common but non-trivial.
Why do some companies still use ASP.NET Web Forms in 2026?
ASP.NET Web Forms remains in production because rewriting legacy applications is expensive and risky. Companies with decade-old installations prioritize stability over modernization. Our data shows 3.2 million sites previously used ASP.NET, many have migrated to ASP.NET Core, but mature enterprises with complex Web Forms apps delay migration until business value justifies rewrite costs.
Based on 135,714 company data
These insights include all TechnologCchecker.io detections of ASP.NET (free & paid plans).