
Proxyman.io
Postman
ngrok
Hoppscotch
HTTP Toolkit
Fiddler
Charles Proxy
A Powerful API Mocking and Testing Tool

Testim
Katalon
Testsigma
BrowserStack
Selenium
Cypress.io
TestMu AI (Formerly LambdaTest)
Agentic testing harness for modern development

Which is more popular?
Based on our record, Requestly seems to be more popular. It has been mentioned 35 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | requestly.com | mabl.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United States · 20 - 49 employees · 2021 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Requestly is a modern and powerful companion for API Development and Testing. It is an open-source tool purpose-built to speed up and simplify API development workflow for developers and QAs. It is a combination of API Client and HTTP Interceptor that helps create and share API Contracts, testing...
mabl is the independent verification layer for agentic development that delivers a verdict you can stand behind. Because the agent that writes the code can't be trusted to check it, mabl verifies it independently — authoring, running, and maintaining your tests as one system from the first commit...
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Mabl is well-suited for software development teams, QA engineers, and DevOps teams that work on web applications and require a reliable and scalable testing solution. It is ideal for businesses that have embraced cloud-based and agile development methodologies and are looking for tools that integrate seamlessly with their continuous integration and delivery pipelines.
Walkthroughs and reviews on video.
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Requestly and mabl.
Requestly's answer
Requestly's answer
Front-end developers, QAs, PMs, Digital Marketers
Requestly's answer
Requestly is an open-source API development and testing tool that combines the capabilities of an API Client and HTTP Interceptor, making it a better alternative to Postman + Charles Proxy. It simplifies API mocking, request modification, and debugging with an intuitive no-code interface, enabling developers and QAs to test APIs efficiently.
Share your experience with using Requestly and mabl. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


On the pricing front, Requestly strikes a balance between affordability and functionality. It is an open-source tool, offering freemium to individual developers and affordable pricing plans for team collaboration. We...
Mabl is a next-generation automated testing tool for web applications. It uses the power of ML & AI to enable easy functional testing of a system. This SaaS service comes with native supports for Firefox, Chrome,...
Mabl is a next-generation automated script less cross-browser testing tool. It uses the power of machine learning and artificial intelligence to enable easy functional testing of applications. The only SaaS service...
Recommendations tracked on public social media and blogs since March 2021.


If you want to try a local-first workflow, you can start using Requestly here: https://requestly.com. - Source: dev.to / 11 months ago
That’s where automation changes the game. By pairing Cursor, an AI-powered coding assistant, with Requestly's local-first API testing and mocking platform, you can offload the grunt work of writing tests to AI while keeping execution... - Source: dev.to / 11 months ago
Requestly is a versatile browser extension and web client used to intercept, mock, and debug APIs in real-time—perfect for frontend developers. - Source: dev.to / over 1 year ago
Tracking mabl since Mar 2021.
When comparing Requestly and mabl, you can also consider the following products.

Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
Compare Proxyman.io to Requestly or mabl:

Stable, self-healing, end-to-end test automation via machine learning. Testim helps accelerate the delivery of high-quality software. Speed up test-authoring and improve the stability of automated, end-to-end tests.
Compare Testim to Requestly or mabl:


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.
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ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.
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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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