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Dev tools · alternatives · 2026

24 alternatives to I built a tool to get instant test results

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…

This tool automates test execution for software developers by running only the affected tests whenever code is saved, eliminating wait times in the development cycle. It analyzes code changes against test coverage data… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. I built a tool to get instant test results launched in 2022; newer entries below may have overtaken it.

  1. 1

    Automated Penetration Testing for AI-Built Apps

    2021 · replay.io · its alternatives →

  2. 2
    Ito▲449

    I'm Evan and I made Ito.ai It's code review that actually runs your code. The result is that it finds more bugs with a smaller false positive rate. You get screenshots, videos, and run logs. I built Ito because manual verification sucks and I thought I could automate it. I've been a professional developer for 15 years and now more than ever, I'm just spending time making sure things work. I looked into all of the other agentic testing tools that click around a url you give them and frankly, they sucked. They just didn't work. I figured to be able to actually testing things you need to run…

    Aug 2026 · ito.ai · its alternatives →

  3. 3
    Replay QA▲438

    Replay QA tells you what is broken before your users do

    Jul 2026 · qa.replay.io · its alternatives →

  4. 4SU

    Hello HN, I am Parth. In my experience, the current form of testing automation takes too long. To solve this, I am creating a developer tool to speed up the code-test cycle for Java developers. It has two main parts: Direct Invoke - lets you call any Java function directly, without the need to execute the whole call hierarchy. (e.g. an HTTP endpoint) In my normal coding workflow, I use the “Evaluate Expression” feature inside IntelliJ IDE. I usually put a breakpoint somewhere in the code and after hitting the breakpoint by calling an HTTP api, let the execution remain paused while I explore…

    2023 · its alternatives →

  5. 5

    Cut cycle time ~60% by automating the code-review process

    2023 · linearb.io · its alternatives →

  6. 6
    Expect▲109

    Let agents test your code in a real browser

    Mar 2026 · expect.dev · its alternatives →

  7. 7

    Maximize conversions with no-code A/B testing and analytics

    2024 · amplitude.com · its alternatives →

  8. 8

    Unit tests on autopilot

    2025 · its alternatives →

  9. 9

    Hey! We are presenting CodeTracer - a user-friendly time-traveling debugger designed to support a wide range of programming languages: https://github.com/metacraft-labs/codetracer?tab=readme-ov-f... CodeTracer records the execution of a program into a sharable self-contained trace file. You can load the produced trace files in a GUI environment that allows you to move forward and backward through the execution and to examine the history of all memory locations. They say a picture is worth a thousand words — well, a video is even better! Watch the demo below to see…

    2025 · github.com · its alternatives →

  10. 10

    Hey HN! We're Charles and Dean, and we're building Stage: a code review tool that guides you through reading a PR step by step, instead of piecing together a giant diff. Here's a demo video: https://www.tella.tv/video/stage-demo-1pph. You can play around with some example PRs here: https://stagereview.app/explore. Teams are moving faster than ever with AI these days, but more and more engineers are merging changes that they don't really understand. The bottleneck isn't writing code anymore, it's reviewing it. We're two engineers who got frustrated with…

    Apr 2026 · stagereview.app · its alternatives →

  11. 11
    Replay▲279

    Your time travel debugger

    2021 · replay.io · its alternatives →

  12. 12

    Open Source Feature Flags, Experimentation, and Product Analytics - growthbook/growthbook

    2021 · github.com · its alternatives →

  13. 13

    A simple Python debugger and profiler that generates animated visualizations of program flow, useful for algorithm learning. - CCExtractor/vardbg

    2020 · github.com · its alternatives →

  14. 14

    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 · its alternatives →

  15. 15

    Hey HN. We’re Jay and Vadim from Highlight.io (https://highlight.io). We’re building an open source [1] monitoring platform for web applications. Today we’re excited to be sharing a performance tool we’ve been working on, which helps you inspect the latency of code execution from the client to the server. As engineers at past startups, we often had to debug slow queries, poor load times, inconsistent errors, etc... While tools like Jaegar [2] helped us inspect server-side performance, we had no way to tie user events to the traces we were inspecting. In other words, although we had…

    2024 · github.com · its alternatives →

  16. 16

    Automation testing made ultra-simple

    2022 · bugbug.io · its alternatives →

  17. 17

    Frontend Performance Analysis Tool for Chrome

    2018 · github.com · its alternatives →

  18. 18

    Lightweight a/b testing for saas founders

    Oct 2025 · tinyabtest.com · its alternatives →

  19. 19

    Turn plain text into automated tests in minutes.

    Aug 2026 · text2test.ai · its alternatives →

  20. 20
    BugBug▲118

    An intuitive tool for end-to-end web app testing

    2021 · bugbug.io · its alternatives →

  21. 21

    Low-code test automation for freelancers & solopreneurs

    2021 · uilicious.com · its alternatives →

  22. 22

    Hey HN, bugstack started life as an internal tool for my other startup Fuelscout because my customers would encounter production bugs when I was away that would ruin their experience. When I went camping and came home to find out my internal tool had fixed an error and shipped it to production I knew it was bigger than Fuelscout, so my little tool became bugstack. bugstack monitors your production errors 24/7. When a user hits a bug, bugstack captures the error, pulls context from your repo, generates a minimal surgical code fix, runs it through CI, and delivers it as a pull request. If…

    Mar 2026 · bugstack.ai · its alternatives →

  23. 23
    Premerge▲106

    Free AI-powered unit test creation tool

    2023 · its alternatives →

  24. 24

    Hey HN, I’m a product designer on a payments team. Every time we were close to shipping a feature, we’d run a bug bash in a giant Google doc or spreadsheet: copy the spec in, write the test cases, ask people to mark Pass/Fail, paste screenshots, then manually turn everything into Jira tickets. It worked, but it always felt a bit painful. Instead of another heavy test management tool, I wanted something that feels closer to the tools we actually like using. More Linear/Notion, less old-school QA. With Preflight, you paste your product requirements and Figma link and get an initial…

    Dec 2025 · preflightqa.xyz · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →