Cognee
Open-source memory and data infrastructure for AI applications that need reliable context.
Memory Systems
Long-term memory, context retrieval, and knowledge persistence systems.
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Open memory systems worth reviewing
Graphiti
Temporal knowledge graph memory system for agents that need facts, entities, and time-aware context.
Letta
Platform for stateful agents with advanced memory, personalization, and learning over time.
Mem0
Open-source memory layer for AI agents and assistants that need personalized recall.
Memori
Open-source memory engine for LLM apps and agents that need persistent context injection.