
Mem
Notion
Obsidian.md
Tana
Logseq
Reflect
Evernote
Supermemory
ChainMemory
Mem0
Memori
Agentmemory
Tempreon
cognee
TheSecondBrain.dev
Suprflo
ChainMemory gives your AI agents persistent memory that belongs to YOU — 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 — 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.
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Based on our record, Mem seems to be more popular. It has been mentiond 6 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.
Eg https://get.mem.ai/ approach or https://beta.omnilabs.ai/ But then tailored to Obsidian. Source: almost 4 years ago
I use Notion but I have heard that the andriod experience is not the best. You may want to try Coda, Obsidian, Mem or Anytype. I know of a few others but I think for the purpose of a second brain these can do the trick it’s just about preference and which experience you like the most. Source: about 4 years ago
Https://get.mem.ai right now it isa web app they have an iOS app in beta. Source: about 4 years ago
For supervising the trauma team I've also been playing with "Mem". https://get.mem.ai/. Source: over 4 years ago
I really love obsidian. Sure I t has a couple of wrinkles, the mobile app is new still and has a couple more wrinkles, but it scratches so many itches I have around note taking. Currently using it alongside https://get.mem.ai/ and love the pairing for knowledge base and real time notes. I’m working from n combining the two to come up with my ideal set up. - Source: Hacker News / almost 5 years ago
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
Mem0 - Your private, local memory layer for all AI tools
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
Tana - Welcome to the future of work. Build anything. Use it for everything. Kill your SaaS subscriptions.
Agentmemory - Persistent memory for Claude Code, Codex & coding agents