Ranked in these QuestionsQuestion Ranking
Pro Free for open source
Codecov is free for all open source repositories on Github, Bitbucket, and Gitlab.
Pro Coverage reports can be integrated into Github and Bitbucket with a browser extension
Overlay coverage reports directly in Github and Bitbucket for seamless integration into your workflow.
Pro Github commit status
Commit statuses are posted to maintain minimum coverage percentage.
Pro Detailed pull request comments
Great detailed pull request comments including Codecov's Coverage Diff which breaks down coverage changes in the pull request. Comments are updated after every successful CI build.
Pro Good customer support
Codecov has great customer support. Especially because it uses Intercom for communication which makes it easy to ask questions or make feature requests.
Pro Grouping Coverage Reports
Codecov groups coverage reports to isolate coverage metrics. For example:
functional. Learn more here.
Con Frequent downtime not reflected in status page
Often codecov.io URL returns 504 or 503 errors to the build scripts resulting in failed CI builds. Downtime is never reflected in their status page.
Con Node package doesn't support piped input
Most Node coverage uploaders allow you to pipe directly from a coverage tool into the coverage uploader, but Codecov seems to require that coverage is written to a file.