Dev tools · alternatives · 2026

FairlyCertain is an A/B testing library for ASP.NET and ASP.NET MVC projects that allows developers to test website changes without extensive setup. The tool integrates directly into existing applications and enables… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. A/Bingo for ASP.NET launched in 2010; newer entries below may have overtaken it.

1. 1
   Time travel debugger for web development▲681

   Automated Penetration Testing for AI-Built Apps

   2021 · replay.io · its alternatives →

2. 2
   AbTest.io▲122

   A free url shortener with A/B testing features

   2017 · cbsplit.com · its alternatives →

3. 3
   Mida.so▲236

   Free and lightweight A/B testing tool for websites

   2024 · mida.so · its alternatives →

4. 4
   I made tool that let's you see everything about any website▲411

   Yes, it's open source: https://github.com/lissy93/web-check :) Why I'm building this? There are a lot of tools out there for discovering meta and security data relating to a website, IP or server. But currently, there isn't anything that does everything, all in one place and without a paywall/ user sign up. It's still a WIP, and I'm working on a new version, with some more comprehensive checks, so any feedback would be much appreciated :)

   2024 · v1.web-check.xyz · its alternatives →

5. 5
   Juggler.dev▲181

   The easiest way to proceed A/B testing on your site

   2021 · its alternatives →

6. 6
   LambdaTest Accessibility Testing Suite▲354

   Ensure web inclusivity & compliance with just a few clicks.

   2025 · testmuai.com · its alternatives →

7. 7
   DotNetFiddle – JsFiddle for .Net▲217

   Test your C# code online with .NET Fiddle code editor.

   2013 · dotnetfiddle.net · its alternatives →

8. 8
   Checkmango▲226

   The full stack A/B testing platform

   2023 · checkmango.com · its alternatives →

9. 9
   Passmarked▲275

   Simple, all-in-one test to check the quality of your website

   2018 · passmarked.com · its alternatives →

10. 10
    LambdaTest▲127

    Ensure your web-apps work seamlessly across all browsers.

    2018 · testmuai.com · its alternatives →

11. 11
    accessScan▲272

    Test any website to see if it’s accessible, for free!

    2020 · accessibe.com · its alternatives →

12. 12
    Splitmat▲74

    A/B tests in minutes, start free, no registration needed

    2022 · splitmat.com · its alternatives →

13. 13DI
    Diff.io▲194

    2015 · diff.io · its alternatives →

14. 14
    A benchmark for analytical databases (Snowflake, Druid, Redshift)▲137

    I created a web page to compare different analytical databases (both self-managed and services, open-source and proprietary) on a realistic dataset. It contains 20+ databases, each with installation and data loading scripts. And they can be compared to each other on a set of 43 queries, by data load time or by storage size. There are switches to select different types of databases for comparison - for example, only MySQL compatible or PostgreSQL compatible. If you play with the switches, many interesting details will be uncovered. Full description:…

    2022 · benchmark.clickhouse.com · its alternatives →

15. 15
    Cross Platform .NET Desktop Application Framework▲129

    Making Web Testing Easier Automated testing on 3000+ desktop & mobile browser at Studio version! Making Web Testing Easier Automated testing on 3000+ desktop & mobile browser at Studio version! Explore product trial and special offers Download TRIAL version to start your full 1 day evaluation now! M

    2017 · browseemall.com · its alternatives →

16. 16DD
    Data Diff – compare tables of any size across databases▲127

    Gleb, Alex, Erez and Simon here – we are building an open-source tool for comparing data within and across databases at any scale. The repo is at https://github.com/datafold/data-diff, and our home page is https://datafold.com/. As a company, Datafold builds tools for data engineers to automate the most tedious and error-prone tasks falling through the cracks of the modern data stack, such as data testing and lineage. We launched two years ago with a tool for regression-testing changes to ETL code…

    2022 · its alternatives →

17. 17
    Direktor▲119

    A/B testing as easy as short URLs

    2019 · direktor.io · its alternatives →

18. 18
    Humblytics▲45

    Intuitive Website Analytics and A/B Split Testing

    2024 · humblytics.com · its alternatives →

19. 19
    Declarative Testing Framework for REST, GraphQL APIs▲45

    :boom: Test REST, GraphQL APIs. Contribute to kiranz/just-api development by creating an account on GitHub.

    2018 · github.com · its alternatives →

20. 20
    abtest.design▲75

    Curated collection of A/B test results

    2024 · abtest.design · its alternatives →

21. 21
    No-Code Visual Web Editor by Taplytics▲101

    Privacy-first and Fastest No-Code web A/B testing solution

    2021 · its alternatives →

22. 22BA
    Backtick – A console for bookmarklets and scripts▲93

    2013 · backtick.io · its alternatives →

23. 23AC
    A C# library to help you enforce a Given-When-Then structured Unit test▲24

    I always strive to write better, clean and readable code. But I often find unit tests are hard to read, and especially harder to quickly identify what are the important pieces, or even what the test is testing about. So I came up with this lightweight library to help enforce unit tests with a Given-When-Then structure. I hope you find this useful. Any feedback are welcome. https://github.com/cobrakai-lab/Cobrakai.GWTUnit

    2021 · its alternatives →

24. 24
    Dual Kind▲74

    Simple A/B testing

    2020 · dualkind.com · its alternatives →

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 →