Agentmemory
ChainMemory
Mem0
Memori
Pieces for Developers
cognee
TheSecondBrain.dev
Claiv Memory
GNU M4
Gema
GCC C Preprocessor (cpp)
Filepp
GPP
PP - A generic Preprocessor
preprocess
tproc
ChainMemory - Portable, verifiable memory for AI agents — works across ChatGPT, Claude, Gemini and any MCP client
Gema - General purpose text macro processor.
Mem0 - Your private, local memory layer for all AI tools
GCC C Preprocessor (cpp) - Top (The C Preprocessor)
Memori - Persistent memory from agent trace, not just conversation
Filepp - filepp is a generic file preprocessor.