2 editor-verified alternatives · Krkn overview →
source: tools.alternatives · stored order · active records only; review scores are annotations and never change membership or order
Schemathesis automatically generates test cases from OpenAPI and GraphQL schemas to find crashes, validation errors, and specification violations in APIs. It uses property-based testing and fuzzing techniques to explore edge cases that manual test writing misses. CLI tool and Python library with CI/CD integration. 3.4K+ GitHub stars with support for authentication, custom checks, stateful testing, JUnit XML, and Allure reports.
qodo-cover (formerly Cover Agent) is an open-source AI agent that automatically generates meaningful unit tests to improve code coverage. It analyzes existing code and test patterns to produce tests that follow project conventions and target uncovered branches. Uses an iterative approach where generated tests are verified by running them, discarding those that fail. MIT licensed with over 5,300 GitHub stars.
Schemathesis, qodo-cover — see all open-source developer tools.
Schemathesis tops our editor-verified list of 2 Krkn alternatives, scoring 85/100 in our hands-on review.
Yes — Schemathesis, qodo-cover are open source.