
FSNotes
Obsidian.md
Standard Notes
Joplin
UpNote
Logseq
Knotes
nvALT
Tempreon
ChainMemory
Memori
Mem0
Agentmemory
TheSecondBrain.dev
cognee
VATES.jp
Tempreon is a personal memory layer for your AI tools, connected over MCP. Your knowledge, preferences, and decisions travel across Claude, ChatGPT, Cursor, and any MCP-capable client โ captured once, available everywhere. It learns how you actually work instead of just storing what you said.
FSNotes
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Tempreon's answer:
Tempreon started with a simple observation: AI models keep changing, but the thing that makes them useful to you โ your context, your preferences, your judgment โ gets rebuilt from scratch inside every tool, and lost every time you move.
We built the layer that fixes that: person-owned memory served over the open Model Context Protocol, so it works across assistants instead of belonging to one. Along the way we open-sourced the pieces that are useful to everyone regardless of whether they use Tempreon โ like memhaul, our MIT-licensed CLI for turning ChatGPT and Claude data exports into files you own.
The through-line is custody: the model is temporary, your memory shouldn't be.
Tempreon's answer:
Most alternatives in this space are memory infrastructure for developers building their own AI apps. If you're the person using several AI tools every day, that's not your problem โ your problem is re-explaining yourself to each of them and losing everything when you switch.
The choice is really about who the memory is for. Ours is for you.
Tempreon's answer:
Tempreon is built for the person, not the app. Most memory products are developer APIs for adding memory to a single product; Tempreon is a memory layer you own that travels with you across every AI tool you use โ Claude, ChatGPT, Cursor, anything MCP-capable.
Tempreon's answer:
Individuals who live in AI tools all day: operators, consultants, founders, sales professionals, and knowledge workers who use more than one assistant and are tired of being a stranger to each of them.
If you've ever pasted the same context into Claude and ChatGPT in the same week โ you're the audience.
Tempreon's answer:
The protocol choice is the product decision: build on the open standard, and your memory works everywhere the standard does.
Based on our record, FSNotes seems to be more popular. It has been mentiond 23 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.
Iโve used FS Notes [1] in the past. [1]: https://fsnot.es. - Source: Hacker News / 4 months ago
FSNotes for macOS and iOS is one I used for a little while. https://fsnot.es/ todo.txt is another thing that comes to mind. http://todotxt.org/ And of course pretty much all of *nix. - Source: Hacker News / over 2 years ago
Https://fsnot.es/ is great - fast, native, free (but you can support developer by in-app purchase). Source: over 3 years ago
Thereโs FOSS https://fsnot.es. Looks quite flexible. Exports, iCloud Sync, Deopbox, can also have notes as a Git repo. But big drawback โ Apple ecosystem only. But since it syncs to things other than iOS I think other apps can be used on other platform. Dev has made it clear he will not be able to develop for other platforms. I have not used it a lot (still on Simplenote and exploring). It looks good and itโs open... - Source: Hacker News / almost 4 years ago
I replaced it with fsnotes, when you disable the sidebar and tweak some settings you get the same thing. https://fsnot.es. - Source: Hacker News / almost 4 years ago
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.
ChainMemory - Portable, verifiable memory for AI agents โ works across ChatGPT, Claude, Gemini and any MCP client
Standard Notes - A safe place for your notes, thoughts, and life's work
Memori - Persistent memory from agent trace, not just conversation
Joplin - Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor.
Mem0 - Your private, local memory layer for all AI tools