RKTracer is a sophisticated tool designed for code coverage and test analysis, allowing development teams to evaluate the thoroughness and effectiveness of their testing efforts across various stages, including unit, integration, functional, and system-level testing, all without needing to modify any existing application code or build process. This versatile tool is capable of instrumenting a wide range of environments, including host machines, simulators, emulators, embedded systems, and servers, while supporting a diverse set of programming languages such as C, C++, CUDA, C#, Java, Kotlin, JavaScript/TypeScript, Golang, Python, and Swift. RKTracer offers comprehensive coverage metrics, providing insights into function, statement, branch/decision, condition, MC/DC, and multi-condition coverage, along with the capability to generate delta-coverage reports that highlight newly added or altered code segments that are already under test. The integration of RKTracer into development workflows is straightforward; by simply prefixing the build or test command with “rktracer,” users can execute their tests and subsequently produce detailed HTML or XML reports suitable for CI/CD systems or integration with dashboards like SonarQube. Ultimately, RKTracer empowers teams to enhance their testing practices and improve overall software quality effectively.