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.

ChainMemory
Mem0
Memori
Pieces for Developers
cognee
TheSecondBrain.dev
Claiv Memory
Persistent memory for Claude Code, Codex & coding agents

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 | reqres.in | agent-memory.dev |
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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.

No analysis of ReqRes yet.
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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 Agentmemory. 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 / 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
Tracking Agentmemory since Jun 2026.
When comparing ReqRes and Agentmemory, you can also consider the following products.

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Portable, verifiable memory for AI agents — works across ChatGPT, Claude, Gemini and any MCP client
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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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Persistent memory from agent trace, not just conversation
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