
Postman
Proxyman.io
Hoppscotch
ngrok
HTTP Toolkit
Fiddler
Charles Proxy
A Powerful API Mocking and Testing Tool
RapidAPI
FreeAPI.watch
GovAPI Atlas
API CRUX
APIsList
Postman
JSON Placeholder
Discover, compare, and integrate public APIs using real-time health monitoring, OpenAPI documentation, and live availability signals.
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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PAP
Public API
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| Website | requestly.com | public-api.org |
| 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...
No description of Public API yet.
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
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 Public API.
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.
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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...
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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 / 12 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 Public API since Jan 2026.
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API marketplace for finding and connecting to the world's top APIs.
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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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Live status of free public APIs, updated every hour. Find reliable, no-credit-card APIs for weather, news, finance, geocoding, and cryptocurrency.
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Search the APIs and web services that national open data portals list, one country at a time: Korea, Japan, the US, France, Germany, the UK, Taiwan, Canada, Australia and Singapore. Lists are refreshed weekly.
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