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.

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

Which is more popular?
Website, pricing, platforms and company facts side by side.
|
PAP
Public API
|
|
|
|---|---|---|
| Website | public-api.org | agent-memory.dev |
| Listed in |
What each product offers, as listed by its team.

Possible disadvantages
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
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Public API and Agentmemory. For example, how are they different and which one is better?
When comparing Public API and Agentmemory, you can also consider the following products.

API marketplace for finding and connecting to the world's top APIs.
Compare RapidAPI to Public API or Agentmemory:

Portable, verifiable memory for AI agents — works across ChatGPT, Claude, Gemini and any MCP client
Compare ChainMemory to Public API or Agentmemory:

Live status of free public APIs, updated every hour. Find reliable, no-credit-card APIs for weather, news, finance, geocoding, and cryptocurrency.
Compare FreeAPI.watch to Public API or Agentmemory:


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.
Compare GovAPI Atlas to Public API or Agentmemory:

Persistent memory from agent trace, not just conversation
Compare Memori to Public API or Agentmemory: