deps.dev is a dependency analyzer for multiple language ecosystems (npm, Go modules, Maven, PyPI, Cargo). It shows basic information, such as the metadata (including license) about each package, dependencies, and reverse dependencies. It enhances this information by adding a diff viewer for the versions. Security advisories affecting a package or dependency are highlighted. The OpenSSF scorecard is also integrated, showing more insights about the project health.

The second feature of the website is an advisory viewer. It shows details about each advisory, including affected versions. It also calculates how much of the ecosystem is affected and patched.