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

calculator.net
AllToolsLab
Omni Calculator
BestToolsKit
Smartly Calculators
Muxtly
geteasetools.com
500+ free online calculators and tools for finance, health, math, conversions, and more.

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 | alltools.dev |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United States · 20 - 49 employees · 2021 | Startup from Bulgaria · 1 - 9 employees · 2026 |
| 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...
AllTools.dev is a modern, fast, free online toolkit built for people who need quick, accurate calculators and converters without signing up, creating an account, or wading through cluttered interfaces. The platform offers 500+ tools across finance (mortgage calculators, loan amortization,...
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
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 AllTools.dev.
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 AllTools.dev. 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...
We have no reviews of AllTools.dev yet. Be the first one to post
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 / 12 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 AllTools.dev since May 2026.
When comparing Requestly and AllTools.dev, you can also consider the following products.

The Collaboration Platform for API Development
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Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
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Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
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AllToolsLab offers 50+ free online tools including PDF tools, calculators, converters and text utilities.
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Helping you make rational decisions, one calculation at a time.
Compare Omni Calculator to Requestly or AllTools.dev: