Mem0
cognee
ChainMemory
Supermemory
Agentmemory
Claiv Memory
Memori
Pieces for Developers
KeepZen
Obsidian.md
Evernote
Notion
Bear
Apple Notes
Notepad++
Keep My Notes
KeepZen - note-taking app for people who spend more time writing than organizing. No blocks, no databases, no noise. Just you and your thoughts.
Come back to clean writing. KeepZen removes the noise and leaves just you and your thoughts โ no complex setup, no tracking, just your words in calm, clear order.
Your notes are encrypted in your browser with your passphrase. The key never leaves your device โ we never see it, and we never store it. When you use sync, only encrypted data is sent to our servers. We cannot read your notes.
Zero-knowledge by design.
Start keeping your thoughts safe. No account required to get started. Your data stays with you. Optional sync when you're ready.
Mem0 KeepZenKeepZen's answer:
KeepZen is built for those who refuse to choose between convenience and privacy. While mainstream tools scan your notes for AI training and "privacy-first" alternatives often require complex manual setup to sync, KeepZen offers a "Third Way." You get absolute end-to-end encryption (E2EE) and seamless multi-device sync out of the box. Itโs the only tool that feels as simple as a notepad but is as secure as a digital vault.
KeepZen's answer:
KeepZen occupies the "Goldilocks zone" of note-taking. It is zero-config private: you get the absolute security of end-to-end encryption (E2EE) and the speed of local-first architecture without having to set up a server or manage complex plugins. Itโs a professional-grade vault that feels as simple as a piece of paper.
KeepZen's answer:
Our users are "Digital Minimalists"โwriters, researchers, and creators who find themselves overwhelmed by the "noise" of modern productivity tools. They are individuals who value their intellectual privacy and want a sanctuary where they can think without being tracked, scanned, or interrupted by AI assistants.
KeepZen's answer:
KeepZen was born from a moment of frustration. I opened a popular note-taking app to capture a fleeting, personal thought, only to be met by a loading spinner and a popup for a new AI feature. The realization was immediate: our digital "private" spaces had become crowded and loud. KeepZen was built to reclaim that silenceโcreating a tool that stays out of your way and keeps your data truly yours.
KeepZen's answer:
Based on our record, Mem0 seems to be more popular. It has been mentiond 2 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.
This is usually a challenge that any developer has to take care of when building an AI agent. In fact, managing the context is one of the hardest problems when working with AI agents and there are many companies like SuperMemory, Mem0 which have invested both resources and time to solve this problem. - Source: dev.to / 20 days ago
Mem0 is probably the most mature cloud-hosted memory option. Good semantic search, clean API, supports multiple LLM providers. The cloud dashboard is solid for browsing stored memories. - Source: dev.to / 3 months ago
cognee - Memory for AI 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.
ChainMemory - Portable, verifiable memory for AI agents โ works across ChatGPT, Claude, Gemini and any MCP client
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Supermemory - ai second brain for all your saved stuff
Notion - All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
