A recurring problem I've noticed in companies with large, legacy codebases is upgrading dependencies. Typically these projects have been around for a long time, no one currently working on them understands the project deeply, and test coverage is quite low. The result is that developers cannot rely on a successful CI/CD result to know if an upgrade didn't break the project. They instead resort to a lot of manual searching and testing to verify that everything is still working.
I built Dutest to easily identify where dependencies are used within a project, and what the level of test coverage is like, broken down by the test type (unit, integration, or end-to-end). This allows me to quickly triage whether an upgrade can be done quickly and safely (high test coverage + low number of usages), or if it is more risky (low test coverage + high usages). It also provides references to quickly jump to that line of code within an IDE.
I thought I'd build this as my first solo SaaS product, and see if this solves a problem that others are experiencing. I'm happy to hear your feedback and to answer any questions.