Alternatives

Products that do what Koredex does

Automatically fixes failing pytest test and proves it worked

1. 1LD
   Leaping – Debug Python tests instantly with an LLM debugger▲120

   Hi HN! We’re Adrien and Kanav. We met at our previous job, where we spent about a third of our lives combating a constant firehose of bugs. In the hope of reducing this pain for others in the future, we’re working on automating debugging. We’re currently working on a platform that ingests logs and then automatically reproduces, root causes and ultimately fixes production bugs as they happen. You can see some of our work on this here - https://news.ycombinator.com/item?id=39528087 As we were building the root-cause phase of our automated debugger, we realized that we developed…

   2024 · github.com

2. 2
   Claude Code auto-fix ▲370

   Auto-fix PRs in the cloud while you stay hands-off

   Mar 2026 · code.claude.com

3. 3
   TestSprite 3.0▲472

   Let a fleet of parallel agents test your app in minutes

   May 2026 · testsprite.com

4. 4KA
   KeelTest – AI-driven VS Code unit test generator with bug discovery▲30

   I built this because Cursor, Claude Code and other agentic AI tools kept giving me tests that looked fine but failed when I ran them. Or worse - I'd ask the agent to run them and it would start looping: fix tests, those fail, then it starts "fixing" my code so tests pass, or just deletes assertions so they "pass". Out of that frustration I built KeelTest - a VS Code extension that generates pytest tests and executes them, got hooked and decided to push this project forward... When tests fail, it tries to figure out why: - Generation error: Attemps to fix it automatically, then tries again -…

   Jan 2026 · keelcode.dev

5. 5PW
   Pytest-watcher – A working alternative to Pytest-watch▲26

   2021 · github.com

6. 6
   TestSprite 2.1▲434

   Agentic testing for the AI-native team.

   Mar 2026

7. 7IB
   I built a tool to get instant test results▲96

   I got sick of the old software development loop: Change code -> Run tests -> wait -> wait some more -> look at failures. I decided to build a tool that will enable you to: Change code -> look at failures. No wait time, no explicit test running. Under the hood: - Runs the whole test suite and collects code coverage per test. - For each auto file save, analyzes the changes on the tests. - Runs changed tests in the background. - Display results, the loop time from change to test results is approx 250ms. Instead of: code -> alt+tab -> arrow up -> rerun all the tests -> wait ... -> test results…

   2022 · github.com

8. 8
   FetchSandbox▲347

   API integration testing that remembers what breaks

   Jul 2026 · fetchsandbox.com

9. 9
   kluster.ai▲172

   Never ship broken AI code again

   Sep 2025

10. 10
    TestRelic AI▲84

    Ask your Playwright tests why they failed

    Apr 2026 · testrelic.ai

11. 11
    Fix My Agent (FMA)▲50

    See what breaks your AI agent and fix it automatically

    Jan 2026

12. 12
    Repodex▲118

    Automatically find and fix errors

    2023

13. 13WB
    We built a tool for fast-forwarding 95% of tests (MIT)▲8

    Hi, we are working on a tool for speeding up test runs, by skipping tests unaffected by code changes. Effectivly, Saving 80-95% of the time, by skipping 80-95% of tests. We started a few months ago, and have managed to get into a few production CI systems. All our prospects and users are on holiday right now. So we decided to repackage and open-source for local test running. available here (https://github.com/nabaz-io/nabaz) under MIT license. One line change: pytest -v -> nabaz test --cmdline "pytest -v" Stalk us on GitHub, or just Star us. Ask questions, we'll answer in…

    2022 · github.com

14. 14DF
    Debugging-Friendly Tracebacks for Python▲123

    2019 · github.com

15. 15
    Blop▲82

    Describe your app and Blop tests it and repairs broken tests

    Jun 2026 · blopai.com

16. 16AT
    A TestDox reporter for pytest▲5

    2017 · github.com

17. 17AC
    A CLI that uses Claude to fix your code until the tests/builds pass▲12

    2024 · github.com

18. 18TD
    Tusk Drift – Open-source tool for automating API tests▲56

    Hey HN, I'm Marcel from Tusk. We’re launching Tusk Drift, an open source tool that generates a full API test suite by recording and replaying live traffic. How it works: 1. Records traces from live traffic (what gets captured) 2. Replays traces as API tests with mocked responses (how replay works) 3. Detects deviations between actual vs. expected output (what you get) Unlike traditional mocking libraries, which require you to manually emulate how dependencies behave, Tusk Drift automatically records what these dependencies respond with based on actual user behavior and maintains recordings…

    Nov 2025 · github.com

19. 19WG
    Wolverine: Give your Python scripts regenerative healing abilities▲43

    Run your scripts with Wolverine and when they crash, GPT-4 edits them and explains what went wrong. Even if you have many bugs it will repeatedly rerun until it's fixed. Demo video on twitter: https://twitter.com/bio_bootloader/status/163688020830443110...

    2023 · github.com

20. 20AF
    A Flask extension that automatically runs pytest in the background▲6

    2015 · github.com

21. 21
    JMIT▲4

    Finds tests that pass even when your code is broken

    Jun 2026 · auroreci.com

22. 22
    I canceled my AI code reviewer and wrote a free local one▲23

    Review the Python you changed, not the Python you inherited. Git-aware AST code review that runs in the seconds before git push. - mukundzha/avouch

    19d ago · github.com

23. 23
    Crilio – pytest for prompts▲5

    A CI gate for testing AI prompts and preventing regressions. - mukundzha/crilio

    12d ago · github.com

24. 24PS
    Pytest-scrutinize – find bottlenecks in your test suite▲7

    2024 · github.com

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