ChainMemory
Agentmemory
Memori
OpenMemory MCP
Tempreon
TheSecondBrain.dev
cognee
Claiv Memory
Notesnook
Obsidian.md
Logseq
Standard Notes
Joplin
Trilium Notes
CherryTree
Zim Wiki
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.
Take notes on any device, capture ideas quickly and always keep them encrypted. You don't need an Internet connection to read or take notes because everything works 100% offline. Notesnook encrypts everything on your device. No one except you can read your notes making sure you enjoy privacy without sacrificing on your productivity: โข Encrypted cross platform sync โข Zero knowledge encryption โข No ads or trackers โข Secure private vault
ChainMemory NotesnookNotesnook is recommended for individuals and professionals who are concerned about data privacy and are looking for a straightforward, secure, and easy-to-use note-taking solution. It is particularly suitable for those who want cross-platform accessibility without sacrificing security.
Based on our record, Notesnook seems to be more popular. It has been mentiond 89 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
The page posted doesn't include the latest addition to specials which was posted on their Discord and visible here https://kagi.com/specials. Which to save you a click it's https://notesnook.com/. - Source: Hacker News / 10 months ago
Https://notesnook.com is better than Notion and Obsidian. The cross-platform apps are fast and smooth, and it have sync, which Obsidian requires a subscription for. - Source: Hacker News / 12 months ago
Looks nice! Would wait for the documentation to learn more. How does this compare to Notesnook? I have found that to be the best in terms of getting the details right (However, the last I checked, the documentation for self-hosting was unclear, and there were bugs in data exporting). https://notesnook.com/. - Source: Hacker News / over 1 year ago
Not sure hoarder is a direct replacement for evernote. As a former long time evernote note user I replaced it with https://notesnook.com. - Source: Hacker News / over 1 year ago
You might want to give Notesnook [0] a try. [0]: https://notesnook.com/. - Source: Hacker News / almost 2 years ago
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
Logseq - Logseq is a local-first, non-linear, outliner notebook for organizing and sharing your personal knowledge base.
OpenMemory MCP - Your private, local memory layer for all AI tools
Standard Notes - A safe place for your notes, thoughts, and life's work