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.

Repothread
DeepDocs
GitHub Copilot
Minglify
Swimm
ReadMe
TypeDoc
Wikipedia for github Code Repositories: Instantly Understand Any GitHub Project with AI

Which is more popular?
Based on our record, ReqRes seems to be a lot more popular than DeepWiki. While we know about 21 links to ReqRes, we've tracked only 2 mentions of DeepWiki.
Website, pricing, platforms and company facts side by side.
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ReqRes
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| Website | reqres.in | deepwiki.org |
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What each product offers, as listed by its team.

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

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Overall verdict
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DeepWiki Review: Best Tool to Understand Any Codebase? (2025)
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How often each product is chosen within a category, 0–100% relative to the other.

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

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 / over 2 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
DeepWiki | AI documentation you can talk to, for every repo. - Source: dev.to / 11 months ago
Just recently discovered Devins DeepWikis and love them. Same idea, talk to your repo, right? What does Sourcebot doe differently / better? https://deepwiki.org/. - Source: Hacker News / about 1 year ago
When comparing ReqRes and DeepWiki, you can also consider the following products.

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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AI-powered repository analysis and code understanding for GitHub, GitLab, and Bitbucket repositories.
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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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mocki Fake JSON API is an advanced platform that offers you to create API for personal use or testing purposes.
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Your AI pair programmer. With GitHub Copilot, get suggestions for whole lines or entire functions right inside your editor.
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