Codecov vs Coverlet
Codecov
about.codecov.ioCoverlet
github.comSide by side
| Figure | Codecov | Coverlet |
|---|---|---|
| Price from | $5/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | Yes | — |
| Web | Yes | — |
| Windows | — | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 4 | 1 |
| Spec score · Test Coverage Tools | 9.4 (#1) | 7.7 (#12) |
| Integrations | Supported code hosts include GitHub, GitHub Enterprise, GitLab, GitLab CE/EE, Bitbucket, and Bitbucket Server. | The project lists a Cake.Coverlet add-in for Cake Build and extensions for viewing coverage in Visual Studio on Windows and Visual Studio for Mac. |
| License | The gazebo server component uses the Functional Source License 1.1 with an Apache 2.0 license granted after two years, while the Codecov GitHub Action repository is MIT licensed. | The repository states that Coverlet is licensed under the MIT License. |
| Purpose | Codecov provides code coverage reporting and insights to help teams improve code quality throughout development. | Coverlet is a cross-platform code coverage framework for .NET with line, branch and method coverage. |
| Support | The site lists Pro Support and Enterprise Support, and the pricing comparison includes email support among plan features. | The project directs users to report bugs and feature requests through the repository’s issues section. |
Plans
In their own words
Codecov
Codecov provides code coverage reporting and development insights, with tools for test analytics, JavaScript bundle monitoring and pull-request checks. It reports line, branch, project and patch coverage in XML, JSON and TXT formats. Pull-request annotations and coverage gates help teams review changes; Status Checks can block a merge when coverage is underperforming. Historical trends show coverage over time. Test Analytics reports failures and detects flaky tests, while Bundle Analysis flags oversized JavaScript bundles in pull requests and tracks bundle-size changes. The homepage also describes AI features for generating unit tests and reviewing pull requests. Developers can use a command-line interface or VS Code extension for coverage information and visualization. Integrations include GitHub, GitLab, Bitbucket, CI platforms and Slack. Codecov lists a broad range of supported languages, including C#, Go, Python, JavaScript, Rust and Swift. It is available through web, API, extension and self-hosted options. The free Developer plan has upload limits for private repositories; paid plans start at $5/user/mo, and a 14-day trial is available.
Coverlet
Coverlet is a free, MIT-licensed code coverage framework for modern .NET SDK-style projects. It measures line, branch, and method coverage across Linux, macOS, and Windows. Before tests execute, Coverlet instruments assemblies, records sequence-point hits, restores the original assemblies, and writes coverage results. Drivers are available for Microsoft Testing Platform, the .NET global tool, VSTest, and MSBuild. The Microsoft Testing Platform driver can emit JSON, LCOV, OpenCover, and Cobertura reports. Depending on the driver, teams can merge reports, validate coverage thresholds, and support deterministic builds. Collector and MSBuild packages use VSTest; Microsoft Testing Platform projects instead use coverlet.MTP, which requires the .NET 8.0 SDK or newer. Cake.Coverlet and Visual Studio viewing extensions are also listed. Coverage gates are supported, and bugs or feature requests go through the repository issues section.