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BuiltWith vs ILSpy

Professional comparison and analysis to help you choose the right software solution for your needs.

BuiltWith icon
BuiltWith
ILSpy icon
ILSpy

BuiltWith vs ILSpy: The Verdict

⚡ Summary:

BuiltWith: BuiltWith is a software that analyzes the technologies used on websites. It scans millions of websites to detect what frameworks, content management systems, JavaScript libraries, web servers, and other technologies are implemented on each site.

ILSpy: ILSpy is a free, open-source .NET assembly browser and decompiler. It allows you to view and analyze the contents of .NET assemblies in C# and other .NET languages.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature BuiltWith ILSpy
Sugggest Score — —
Category Online Services Development
Pricing Open Source Open Source

Product Overview

BuiltWith
BuiltWith

Description: BuiltWith is a software that analyzes the technologies used on websites. It scans millions of websites to detect what frameworks, content management systems, JavaScript libraries, web servers, and other technologies are implemented on each site.

Type: software

Pricing: Open Source

ILSpy
ILSpy

Description: ILSpy is a free, open-source .NET assembly browser and decompiler. It allows you to view and analyze the contents of .NET assemblies in C# and other .NET languages.

Type: software

Pricing: Open Source

Key Features Comparison

BuiltWith
BuiltWith Features
  • Website technology profiler
  • SEO analysis
  • Competitive analysis
  • API access
ILSpy
ILSpy Features
  • Decompile .NET assemblies into C# and other .NET languages
  • Navigate and view the contents of assemblies
  • Search for types, methods, properties, etc.
  • View metadata and attributes for types and members
  • Compare different versions of assemblies
  • Plugin architecture to extend functionality

Pros & Cons Analysis

BuiltWith
BuiltWith

Pros

  • Detailed technical insights
  • Large database of websites
  • Useful SEO tools
  • Browser extensions available

Cons

  • Can be expensive for large-scale use
  • Limited free plan
  • No mobile app
ILSpy
ILSpy

Pros

  • Free and open source
  • Works on Windows, Linux and Mac
  • Supports wide range of .NET assembly versions
  • Integrates with Visual Studio
  • Active development and user community

Cons

  • Limited decompilation of obfuscated assemblies
  • No official support offered
  • UI is basic and unpolished in places
  • Steep learning curve for some advanced features

Pricing Comparison

BuiltWith
BuiltWith
  • Open Source
ILSpy
ILSpy
  • Open Source

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BuiltWith
BuiltWith
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ILSpy
ILSpy
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