
Notion
Obsidian
Evernote
Tana
Supermemory
Bear
Puppet
Capture and access information from anywhere

Supermemory
Mem0
Claude Memory
Byterover
ContextStream
Pieces for Developers
Spend less time repeating yourself to Claude Code and Codex. Carry recent decisions into new sessions and switch tools without writing a recap. Start free.

Which is more popular?
Based on our record, Mem seems to be more popular. It has been mentioned 6 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | get.mem.ai | crosshead.sh |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Mem yet.
Crosshead gives Claude Code and Codex persistent identity and project memory, so you can pick work back up without explaining the same project again. Keep the decisions behind a change, corrections you have already made, approaches that failed, and what to try next. When you open a fresh session...
What each product offers, as listed by its team.


Possible disadvantages
No features have been listed yet.
Walkthroughs and reviews on video.
Mem: A First Look
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Mem and Crosshead.
Crosshead's answer:
Choose Crosshead if you regularly start fresh coding sessions, return to projects after a break, or switch between Claude Code and Codex. It helps the next session start with decisions you have already made and approaches you have already tried, reducing the need to write a recap or explain the same requirements again.
You can start with free working memory, inspect what your agent remembers, and add prepaid credits for optional long-term memory, search and archives. There are no subscription or seat fees. The CLI, daemon, adapters and hooks are open source under Apache-2.0.
Crosshead's answer:
Crosshead combines automatic working-memory capture with continuity between Claude Code and Codex. It saves recent requests, decisions, corrections and next steps through the tools' lifecycle hooks, then brings that context into a fresh session in the same repository.
Each project keeps its own working memory, and each agent has its own identity. Signed handoffs and an inspectable command-line interface help you understand what is being carried forward. Recent working memory is free; deeper search and archive operations are available through prepaid credits.
Crosshead's answer:
Developers who use Claude Code or Codex for ongoing projects, particularly people working across several sessions, repositories or coding tools. This includes independent developers, consultants and small engineering teams. Teams running multiple agents can also share credits and set individual spending limits.
Crosshead's answer:
Crosshead is built by FriendMachine Labs, LLC, a Michigan company working on persistent AI operators, useful software and research. It addresses a recurring problem in agent-assisted development: decisions and discoveries can get stranded in a chat, even though the project continues.
The goal is to let useful progress carry forward when a session ends or the coding tool changes. FriendMachine publishes continuity benchmarks with their methods, results and limitations, alongside the open-source client.
Crosshead's answer:
Crosshead is built primarily with TypeScript and Node.js. The hosted API uses Fastify, PostgreSQL with pgvector for vector search, and Redis. Infrastructure runs on Google Cloud, including Cloud Run, Cloud SQL and Cloud Storage.
The local CLI and daemon connect to Claude Code and Codex through lifecycle hooks. Agent authentication and signed handoffs use Nostr-compatible secp256k1 keypairs.
Share your experience with using Mem and Crosshead. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Mem is a note-taking app focusing on simplicity, quickness, and collaboration. The app allows users to capture, connect, and share information easily. It combines features such as lightning fast capture, always-on...
We have no reviews of Crosshead yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


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... Source: over 4 years ago
Https://get.mem.ai right now it isa web app they have an iOS app in beta. Source: over 4 years ago
Tracking Crosshead since Nov 2026.
When comparing Mem and Crosshead, you can also consider the following products.

All-in-one workspace. One tool for your whole team. Write, plan, and get organized.
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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.
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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.
Compare Evernote to Mem or Crosshead:

OpenMemory Chrome Extension: Long-term memory for ChatGPT, Claude, Perplexity, Grok etc - mem0ai/mem0-chrome-extension
Compare Claude Memory to Mem or Crosshead: