Codecov provides highly integrated tools to group, merge, archive and compare coverage reports.

1. Upload coverage reports from your CI builds.
2. Codecov merges all builds and languages into one beautiful, coherent report.
3. See this data overlaid via our browser extension with Sourcegraph.

Are you desiring an on-prem install? Please see https://codecov.io/enterprise

Do you have fewer than 5 users in your org + private repos? You can sign up for free at https://codecov.io/

Check Run Reporter takes your structured reports (JUnit, for example) and presents their results to your right in the GitHub UI. No need to dig through your CI service's logs.