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

Gema
GCC C Preprocessor (cpp)
GNU M4
Filepp
GPP
preprocess
tproc
P is a text preprocessor designed for Pandoc (and more generally Markdown and reStructuredText).
Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | agent-memory.dev | christophe-delord.pages-perso.free.fr |
| Listed in |
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.


Overall verdict
Why this product is good
Recommended for
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Portable, verifiable memory for AI agents — works across ChatGPT, Claude, Gemini and any MCP client
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General purpose text macro processor.
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Your private, local memory layer for all AI tools
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Top (The C Preprocessor)
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Persistent memory from agent trace, not just conversation
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GNU M4 is an implementation of the m4 macro preprocessor.
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