Best Code Coverage Tools for TeamCity

dotCover is a powerful code coverage and unit testing tool designed for .NET that seamlessly integrates into Visual Studio and JetBrains Rider. This tool allows developers to assess the extent of their code's unit test coverage while offering intuitive visualization features and is compatible with Continuous Integration systems. It effectively calculates and reports statement-level code coverage for various platforms including .NET Framework, .NET Core, and Mono for Unity. As a plug-in to popular IDEs, dotCover enables users to analyze and visualize coverage directly within their coding environment, facilitating the execution of unit tests and the review of coverage outcomes without having to switch contexts. Additionally, it boasts support for customizable color themes, new icons, and an updated menu interface. Bundled with a unit test runner shared with ReSharper, another JetBrains product for .NET developers, dotCover enhances the testing experience. It also supports continuous testing, allowing it to dynamically identify which unit tests are impacted by code modifications as they occur. This real-time analysis ensures that developers can maintain high code quality throughout the development process.

Coco is a comprehensive code coverage solution designed for modern software development across both embedded systems and desktop applications. It empowers developers, QA engineers, and compliance teams to measure and improve test coverage through function, branch, decision, condition, and MC/DC coverage metrics. With support for multiple languages and toolchains—including GCC, Clang, MSBuild, ARM, QNX, and Green Hills—Coco integrates seamlessly into existing CI/CD workflows without requiring code refactoring. Teams can quickly detect coverage gaps, streamline regression testing, and remove redundant test cases to shorten validation cycles. For regulated industries like automotive, aerospace, and healthcare, Coco delivers qualification kits and pre-built certification artifacts to support ISO 26262 and DO-178C compliance. The Coco Cross-Compilation Add-on extends capabilities to embedded Linux, RTOS, and bare-metal targets, offering full traceability from test execution to certification. Its integration with Test Center provides real-time analytics, visualization, and organization-wide reporting for test intelligence. With Coco, development teams gain transparency, speed, and trust in every release cycle.