
Selenium
Testsigma
mabl
TestMu AI (Formerly LambdaTest)
Testim
TestComplete
BrowserStack
Built on the top of Selenium and Appium, Katalon Studio is a free and powerful automated testing tool for web testing, mobile testing, and API testing.

Applitools Eyes
Argos CI
Pixeleye
Emtrey
BrowserStack
WebDiff is a desktop app that compares a website before and after an update to instantly spot any unwanted visual, SEO, code, or network changes.

Which is more popular?
Based on our record, Katalon seems to be more popular. It has been mentioned 12 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | katalon.com | webdiff.app |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from Italia · 1 - 9 employees · 2024 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Katalon yet.
WebDiff is a desktop application for macOS and Windows that lets you compare two versions of a website - for example, before and after a CMS, theme or plugin update - to instantly spot any unwanted change. It was built by TangoDev, an Italian software agency, out of a very concrete need: making...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Katalon is recommended for software testing teams and quality assurance professionals who are seeking a cost-effective and versatile automation tool. It's especially well-suited for those who work with diverse technologies and want an all-in-one platform for their test automation needs. Its ease of use makes it accessible for those new to automation, while its advanced features cater to more experienced testers.
No analysis of WebDiff yet.
Walkthroughs and reviews on video.
Katalon Studio: Advantage and Disadvantage to Katalon Studio
More videos
WebDiff
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Katalon and WebDiff.
WebDiff's answer:
WebDiff checks a website on five layers in a single report: visual (desktop and mobile), SEO, links, source code and network requests. Most tools look at screenshots only. WebDiff also catches a changed title or H1, a broken link or a missing script, even when the page looks the same.
It is also a desktop app that runs entirely on your computer:
WebDiff's answer:
Tools like Percy, Applitools or Chromatic are built for development teams with automated test pipelines. WebDiff is built for people who update and maintain websites day to day and need a fast, reliable check without writing tests.
WebDiff's answer:
WebDiff is also used by SEO specialists (to make sure updates don't affect titles, meta tags, H1s and links), QA testers, and developers during site migrations (to compare the old and new site).
WebDiff's answer:
WebDiff was born at TangoDev, a small software agency in Italy, out of a problem we faced every week. You update a client's WordPress site, with core, plugins and theme, check a few pages, and everything looks fine. An hour later the client calls: some buttons have disappeared and the contact form no longer works.
Checking every page by hand with screenshots was slow and unreliable, so we built a tool for ourselves that compares the site before and after the update and shows exactly what changed. It worked so well that we released it publicly in December 2024. Since then, many releases have been shaped directly by user feedback, from the AppSumo community to Product Hunt.
WebDiff's answer:
WebDiff is used by hundreds of freelancers and web agencies around the world, many of whom joined through our AppSumo campaign. They range from solo developers maintaining a handful of client sites to agencies updating dozens of websites every month.
WebDiff's answer:
WebDiff is a cross-platform desktop app for macOS and Windows, built with modern web technologies. At its core is a proprietary analysis engine we built in-house to maximize reliability and performance: it loads each page in a real browser environment, captures visual snapshots (desktop and mobile), source code, SEO data, links and network requests, then compares the two versions and highlights every difference.
Everything runs locally on your computer: no cloud processing, no external servers.
Share your experience with using Katalon and WebDiff. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Katalon Studio is an integrated environment for API, web, desktop, and mobile testing. It provides a rich feature set for comprehensive testing.
Katalon Studio is a versatile testing platform that provides a comprehensive solution for web, API, mobile, and desktop application testing. It's designed for users of all technical levels and features codeless test...
API testing in Katalon Studio is a comprehensive feature that supports all sorts of REST, SOAP/1.1, and SOAP/1.2 calls. Katalon Studio allows testers to collaborate in multiple ways on their API project, including...
We have no reviews of WebDiff yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Katalon True Platform is designed for teams making the transition from fragmented toolstacks to a unified quality system. It covers the full testing lifecycle in one platform: manual testing, test automation, test management, test... - Source: dev.to / 6 months ago
TL;DR: For AI-native test generation from specs, try Kusho AI. For the most complete platform with the newest AI Agent Mode, go Postman. For open-source and Git-native workflows, Bruno or Hoppscotch are your best bets. Enterprise teams... - Source: dev.to / 8 months ago
Overview: Katalon Studio now offers a beta AI test case generator capable of producing test scenarios from OpenAPI/Swagger specifications. - Source: dev.to / about 1 year ago
Tracking WebDiff since Nov 2026.
When comparing Katalon and WebDiff, you can also consider the following products.

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Complete AI-driven Test Automation platform for Web apps, Mobile apps and APIs. Simple English commands to automate complex tests easily and effectively with all the flexibility that enterprise teams need!
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Argos is a visual testing solution that fits in your workflow to avoid visual regression. Takes screenshots on each commit and be notified if something changes.
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The batteries-included platform for visually testing and reviewing your UI; it's even self-hostable! Connect your codebase with our many integrations and dramatically increase your test coverage in minutes.
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