
ChainMemory
OpenMemory MCP
Agentmemory
Memori
Tempreon
cognee
TheSecondBrain.dev
Suprflo
Locus Notes App
Notion
Obsidian.md
Bear
Evernote
Logseq
OneNote
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
Locus Notes AppNo features have been listed yet.
OpenMemory MCP - Your private, local memory layer for all AI tools
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Agentmemory - Persistent memory for Claude Code, Codex & coding agents
Obsidian.md - A second brain, for you, forever. Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files.
Memori - Persistent memory from agent trace, not just conversation
Bear - Bear.app is a note-taking and content writing app that helps you boost productivity with its intuitive tools.