
FreeFormatter
DevTools Advanced
DeveloperToolStack
JSON Formatter & Validator
AllDevToolsHub
Code Beautify JSON Validator
Boop
Fast browser-based tools for SQL, JDBC URLs, explain plans, PL/SQL dependencies, DDL scripts, regex, redirects, encoders, payloads, and backend workflows.
JSON Placeholder
JSON Server
mocki Fake JSON API
httpbin(1)
MockRest
Nacapi
Format JSON Online
A hosted REST-API ready to respond to your AJAX requests.

Which is more popular?
Based on our record, ReqRes seems to be more popular. It has been mentioned 21 times since March 2021.
Website, pricing, platforms and company facts side by side.
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ReqRes
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| Website | devtoolstack.in | reqres.in |
| Listed in |
What each product offers, as listed by its team.

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

Overall verdict
Why this product is good
Recommended for
No analysis of ReqRes yet.
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using DevToolStack.in and ReqRes. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking DevToolStack.in since May 2026.
Https://reqres.in/ - roughly that much in ads revenue. Would love to add a paid plan for more features, but....time. - Source: Hacker News / almost 2 years ago
Reqres.in - A Free hosted REST-API ready to respond to your AJAX requests. - Source: dev.to / almost 3 years ago
As stated earlier we are using the REQ | RES API in the example, you can check it out to see all the methods it provides. Now, go to the core/internet_services/ create a dart file and name it paths.dart, this will contain the baseurl and... - Source: dev.to / over 3 years ago
When comparing DevToolStack.in and ReqRes, you can also consider the following products.

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JSON Placeholder is a modern platform that provides you online REST API, which you can instantly use whenever you need any fake data.
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A collection of developer tools in one place in your browser
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Get a full fake REST API with zero coding in less than 30 seconds. For front-end developers who need a quick back-end for prototyping and mocking
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120 free browser-based developer utilities. No sign-up required.
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mocki Fake JSON API is an advanced platform that offers you to create API for personal use or testing purposes.
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