ChainMemory
Agentmemory
OpenMemory MCP
Pinecone
Memo.ai
Memori
cognee
MemoryLake
Cryptee
CherryTree
Trilium Notes
Zim Wiki
Joplin
Notesnook
Milanote
Standard Notes
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.
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.
It works on all your devices and provides a zero-knowledge place to keep all your sensitive digital belongings. cryptee has all the features you'd expect from a modern document editor, like live sync with unlimited devices, rich document editing, to-dos, markdown, hotkeys, code highlighting, latex math, embeds, attachments, support for tables, ability to attach pdf files, read EPUB ebooks, listen to audio-memos, as well as open and link other various file formats.
Cryptee is based in Europe, in Tallinn, Estonia. A country named "the most advanced digital society in the world" by Wired, and a country where the government runs on blockchain.
ChainMemory CrypteeIndividuals or organizations that require secure storage and privacy for their documents and photos, particularly those concerned about data tracking, surveillance, or needing a privacy-first cloud service alternative.
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Based on our record, Cryptee seems to be more popular. It has been mentiond 79 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 only major hurdle to this is Apple continuing to treat web apps as second class citizens on iOS If you add a site to iOS' homescreen it automatically becomes a PWA. The best example I found of a site fully leveraging this feature is Cryptee[0]. They talk about the PWA thing here: https://crypt.ee/download [0] https://crypt.ee/. - Source: Hacker News / over 2 years ago
Well, then - if self hosting is not your thing - something like crypt.ee might be your thing? Clearly a different pricing model, data is fully encrypted, open source, across platforms. Source: over 2 years ago
Https://crypt.ee now. I used to mostly use local markdown editors like Ulysses and Zettlr. Source: about 3 years ago
Crypt.ee Ticks 1/2/3/5 of your requirements However free tier only has 100MB storage which might be enough for a journal, it also has the best rich text editor of them all, would highly recommend. Source: about 3 years ago
I've only used it for editing docs but have found crypt.ee very easy to use. Source: about 3 years ago
Agentmemory - Persistent memory for Claude Code, Codex & coding agents
CherryTree - A hierarchical note taking application, featuring rich text and syntax highlighting, storing data in a single xml or sqlite file.
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.
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.