ChainMemory
Pinecone
Memo.ai
Agentmemory
Memori
MemoryLake
OpenMemory MCP
RoBrain
Byterover
Supermemory
Pieces for Developers
Mengram
OpenMemory
Mem
Second Brain for AI
Claude by Anthropic
ChainMemory gives your AI agents persistent memory that belongs to YOU โ not to a single vendor.
Save a memory in ChatGPT, recall it in Claude or Gemini. Available via Chrome extension, MCP server (npm), or REST API. Every memory gets a cryptographic fingerprint and project states are anchored with Merkle proofs, so anyone can independently verify integrity โ no trust required.
Memories consolidate into a structured Project Brain (decisions, milestones, risks) instead of a pile of raw notes. Multi-agent native: Claude, Cursor and GPT share one consolidated state. Free tier available.
ChainMemory
ByteroverPinecone - Search through billions of items for similar matches to any object, in milliseconds. Itโs the next generation of search, an API call away.
Supermemory - ai second brain for all your saved stuff
Memo.ai - Simple and elegant notes app on your Mac
Pieces for Developers - Centralized code snippet manager to streamline your workflow
Agentmemory - Persistent memory for Claude Code, Codex & coding agents
Mengram - AI memory API with 3 types: facts, events, and workflows