
CherryTree
Zim Wiki
Cryptee
Trilium Notes
Joplin
OneNote
Evernote
Google Keep
ChainMemory
Agentmemory
OpenMemory MCP
Pinecone
Memo.ai
Memori
cognee
MemoryLake
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.
CherryTree
ChainMemoryCherryTree is ideal for students, writers, researchers, and anyone who needs to manage complex information in a structured manner. It is particularly suitable for individuals who appreciate hierarchical organization and who may require the functionality to include various types of content in their notes.
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Zim Wiki - Zim is a graphical text editor used to maintain a collection of wiki pages. Each page can contain links to other pages, simple formatting and images.
Agentmemory - Persistent memory for Claude Code, Codex & coding agents
Cryptee - Cryptee is a safety and privacy focused, encrypted and cross-platform personal data storage service. You can write personal documents, notes, journals, store photos and all sorts of other files.
OpenMemory MCP - Your private, local memory layer for all AI tools
Trilium Notes - Trilium Notes is a hierarchical note taking application.
Pinecone - Search through billions of items for similar matches to any object, in milliseconds. Itโs the next generation of search, an API call away.