The Easiest Way To Unit Test

Made for Legacy Code

Isolator for C++

  • For Windows & Linux
  • Mock your code without changing it
  • Fake static methods, private methods, members and fields and more!
  • No need to change your legacy code
  • Get cleaner code

Isolator for .NET

  • Seamless integration with Visual Studio
  • Mock your code without changing it, even your legacy code
  • Fake everything!
  • Use Smart Runner, Test Coverage & Automated Test Suggestions
  • #1 tool for .NET unit testing

Trusted By


Keep Your Unit Testing Maintenance Low

  • Typemock is completely dynamic. There's no need to build extra artifacts.
  • The default is pit of success. Always working.
  • Warns about test inter dependencies.*
  • Fakes all dependencies in one go.*
*In .NET only

Our Users Say It Best

I have been using Typemock Isolator for quite some time and I would like to thank the Typemock team for such a great product which I believe is the only product that makes Unit Testing really possible

Senior Architect (AVP) at Société Générale

Typemock Isolator is a really great product. The best mocking framework I have used so far.

Team Lead at Scanvaegt Systems

Typemock has been really wonderful for us, it gave us strong tools to mock code in our tests project. With Support team, everything has been working really good, support team is really quick answering questions.


Typemock Isolator enables us to modify our legacy applications without changing the source code.


Typemock has helped us get some difficult to test code under test, as well as speed up the writing of some business rules/classes. The new version is quite impressive with the suggested tests. Any tool that helps you write more (and better!) tests have got to help make better quality code.

Lead Developer at Unlisted Marketplace

Your product is the bomb. I can’t think of anything you could do to make my life easier, either. Thanks!

Cloud Solutions Architect at Microsoft

From a C# developer perspective, TypeMock allows us to test the untestable. Any HTTP/Network activity can be fully mocked, and the Suggest functions can look at the legacy code and create a test suite for it. These tests teach you how to write your own from scratch. It’s a Godsend.

Doug Thompson
.NET Consultant | Developer | Architect | Azure

With Typemock we don’t have to rewrite product code specifically for testing purposes. This not only saves time, it also allows us to test components of our product code that cannot be readily changed, enabling comprehensive testing and overall high quality.

Software Developer - Tech Lead

Typemock - My testing tool of choice. Each time I use it, I rediscover its power, and I'm amazed. Great tool!

Software Engineer III at Payless ShoeSource

Typemock boosts productivity because you don't have to explicitly code from the ground up with testing in mind, which can be difficult to handle. Typemock has been able to cover up the coupling and dependency sins that we all have leaked into our applications from time to time.

Co-founder and Chief Architect at ClearlyAgile

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