Coveralls

The product is a test coverage analytics platform that measures and tracks code coverage to show which parts of code are not covered by tests and surface trends over time. It is for software developers and engineering organizations of all sizes, including open source projects and teams with private repositories, including enterprises that need to run on their own servers. It is delivered as a SaaS that integrates with any CI service and multiple programming languages, with an enterprise self-hosted option and free use for open source.

Key features

• Repository coverage stats
• File coverage reports
• Line-by-line coverage
• Repository overview dashboard
• Coverage history and trends
• Build-by-build coverage history
• Pull request coverage comments
• PR status updates for workflows
• Slack and webhook notifications
• Coverage badges
• CI-agnostic integrations
• 30+ language integrations
• GitHub Action and CircleCI Orb
• API for repos and stats
• Unlimited users
• Monorepo support with Carryforward Flags