Open Source Test Automation Framework

Customize and extend our cross-platform .NET 8, JAVA test automation framework to perfectly fit your needs.

Start on top of hundreds of best practice features and integrations.

Completely free to use in commercial projects. No hidden fees.

BELLATRIX open source test automation framework illustration

We can help your team to build high-quality and highly scalable automated tests.

Open Source

As an open source company, we're passionately engaged in numerous projects, initiatives and standards where we represent the needs and requirements of our many customers and partners.

Test Everything

Web, including responsive, iOS, Android, Desktop, and REST services.

Unified Framework API

All features that we provide- use the same syntax. Once you learn how to write tests for the web, you can start immediately writing for mobile, desktop, or REST.

Integrations

Seamlessly integrate the framework with your existing tools and processes. Execute tests in the clouds, distributed and publish test results in reporting solutions.

Web, desktop and API testing.

What can be tested?

Benefits

Web automation cross browser - Chrome, Firefox, Edge, IE, Opera, Chrome Headless, Firefox Headless.

The standard for web automation. Open source. Large community. All major cloud platforms support it. Browser vendors support.

Web automation cross browser -Chrome, Firefox, Edge, IE, Opera, Chrome Headless, Firefox Headless.

Modern web automation framework. Open source. Supports multiple browsers including Chromium, Firefox, and WebKit. Strong community and frequent updates.

Mobile Automation - iOS, Android native, hybrid and mobile web apps.

The standard for mobile automation. Open source. Large community. Compatible with major cloud providers. Can run in Selenium Grid.

Desktop Automation - WPF, WinForms and Universal applications.

WinAppDriver

Officially supported by Microsoft. Can run in Selenium Grid.

API Automation - REST web services.

RestSharp

The standard for API automation in C#. Open source. Large community.

.NET Core

Open source. Run tests on Windows, Linux and MacOS.

MSTest, NUnit

Rich set of assert libraries. Open source. Large community.

Support all major cloud providers - CrossBrowserTesting, SauceLabs, Browserstack (mobile,web)

Easily integrated with all CI systems

What Our Users Are Saying

The course was everything exactly that is specified in the description. The lecturer was always asking us for questions and made sure everything was explained thoroughly. Thank you.

Alexandrina Varbanova

For now, I used only the web version of the tool because of project specific. There is some stuff I really like Locators – At the begging, it was a little hard for me to use them, but later when you get used them a little more you realize that this way for creating of elements is better than normal WebDriver one. Contains methods for IDs and classes are AWESOME! Framework’s Extensibility is excellent. They provide all default HTML elements.

Ventsislav I.

Software Engineer in Test

Innovative Lab

Open Source Test Automation Framework

Customize and extend our cross-platform .NET 8, JAVA test automation framework to perfectly fit your needs.

Start on top of hundreds of best practice features and integrations.

Completely free to use in commercial projects. No hidden fees.

We can help your team to build high-quality and highly scalable automated tests.

Open Source

Test Everything

Unified Framework API

Integrations

Web, desktop and API testing.

On Top of That We Build the Following Advantages

Easy add new logic to your tests without causing regression issues. Control the whole execution workflow - change browsers or reuse them. Retry your failing tests to make sure that there is a real problem.

AI Integration

Image Recognition

Web Controls

Unified Team Conventions

Troubleshooting Easiness

Test Responsive Layouts

Human Readable Tests

Easy Knowledge Transfer

Boost Test Reliability

Extend The Framework to Fit Your Needs

Accelerate Test Execution

Accelerate Test Creation

Automate UI actions or user scenarios on real devices or emulators with BELLATRIX features from test creation to execution.

AI Integration

Unified Team Conventions

Troubleshooting Easiness

Test Responsive Layouts

Human Readable Tests

Extend The Framework to Fit Your Needs

Easy Knowledge Transfer

Boost Test Reliability

Accelerate Test Execution

Accelerate Test Creation

Automate UI actions or user scenarios on real devices or emulators with BELLATRIX features from test creation to execution.

AI Integration

Unified Team Conventions

Troubleshooting Easiness

Test Responsive Layouts

Human Readable Tests

Extend The Framework to Fit Your Needs

Easy Knowledge Transfer

Boost Test Reliability

Accelerate Test Execution

Accelerate Test Creation

Cross-platform screenshot and video recording on test failure. Extend the framework to fit your needs. Test responsive layouts and much more.

AI Integration

Image Recognition

Troubleshooting Easiness

Test Responsive Layouts

Human Readable Tests

Extend The Framework to Fit Your Needs

Easy Knowledge Transfer

Boost Test Reliability

Accelerate Test Execution

Accelerate Test Creation

Unified Team Conventions

Speed up by predefined project templates, better API discoverability and go ready-to-go solution. Support advanced test case scenario like authentication strategies and retry failed requests.

Unified Team Conventions

Test API Performance

Human Readable Tests

Extend The Framework to Fit Your Needs

Easy Knowledge Transfer

Accelerate Test Execution

Accelerate Test Creation

Seamlessly Integrate with Your Existing Tools and Processes.

Generate test cases and bug reports automatically based on your tests. Publish the test results in all major test result portals.

What Our Users Are Saying

Our Plans for 2026

Shadow DOM Better Handling and Product Integrations

AI-powered Test Automation

BELLATRIX 4.6

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