Cobrain
Shared memory for Claude, ChatGPT and your AIs
- Upvotes
- 0
- DR
- 5 no change since last check
- Followers
- 0
- Since
- 2026
A Markdown memory outside chats, shared between Claude, ChatGPT, Claude Code and collaborators, kept in your control with encryption.
About Cobrain
Cobrain is a shared memory system for AI assistants and their users. Instead of rebuilding context in every new chat, users store decisions, constraints and details in Markdown notes that Claude, ChatGPT, Claude Code and other MCP-compatible AIs can read and update. Notes stay in your control, encrypted so only you and authorized people can access them.
You can work alone on the free plan with up to 1,000 notes, or share branches with colleagues who use different AIs on the same project. The Pro plan adds unlimited notes, file attachments your AI can read, and unlimited sharing. The Team plan extends access to entire squads on a single invoice, with each member keeping their own personal brain.
All notes are stored as plain Markdown files in real folders that you can export and open with any editor. The data lives encrypted in Ireland, and Cobrain's server only decrypts it to show it to you and your authorized AIs.
- encryption
- ai integration
- context management
- ai memory
- shared-workspace
- markdown-notes
Features worth knowing
- Shared memory across different AIs
- Markdown notes in real folders
- Share branches with collaborators
- MCP connector for Claude, ChatGPT and compatible AIs
- Search by meaning on Pro and Team plans
- Attach PDFs and documents for AI to read
- Version history with unlimited revisions on Pro
- Permission-based access control
Pricing
Free: $0, up to 1,000 notes. Pro: $9/month, unlimited notes and shares. Team: $7/seat per month (minimum 3 seats), company brain with multiple admins.
Cobrain metrics
| Metric | Value |
|---|---|
| Domain Rating | 5 no change since last check |
| Trust Flow | 7 no change since last check |
| Citation Flow | 27 no change since last check |
| Referring domains | 15 no change since last check |
| External backlinks | 561 no change since last check |
Ahrefs Domain Rating scanned 29 Oct 2026, updated 29 Oct 2026. Main topic: Computers/Systems (7). Majestic scanned 29 Oct 2026, updated 29 Oct 2026. Link stats via Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
Cobrain domain facts
Reveal the domain facts
| Domain age | 2 months |
|---|---|
| Registered | |
| Expires | |
| Registrar | Name.com, Inc. |
| DNSSEC | Not signed |
Cobrain launch results
| Measure | At launch, then latest |
|---|---|
| Domain Rating (Ahrefs) | 5 first measured 29 Oct 2026 |
| Referring domains (Majestic) | 15 first measured 29 Oct 2026 |
Day 0 since launch. Next receipt: day 30, 28 Nov 2026. The figures report a change; they do not say what caused it, and many things can. No figure here is a guess.
Compare and explore
FAQ
- Which AIs does Cobrain work with?
- Claude, ChatGPT, Claude Code, Codex, Cursor and any other AI that supports MCP. You paste an address and authorize once. Claude requires a paid plan for custom connectors; ChatGPT uses a plugin you download on any plan.
- Can my AI read PDFs and documents?
- Yes, on the Pro plan. Attach a file to a note and your AI opens it: PDFs including scanned ones, Word, Excel, PowerPoint, Pages and Keynote. Videos show a few frames; audio is not yet supported.
- Does the person receiving a share have to pay?
- Never. A free account is enough. The plan is paid for by whoever shares. Receiving branches is unlimited on all plans.
- What happens to my notes if I stop paying?
- You lose nothing. All notes stay readable and editable. Shares go read-only beyond the first three; attachments stay but you cannot add more. Everything resumes when you reactivate.
Leave a review for Cobrain
Nobody has reviewed Cobrain yet. Start things off.
A review is always free and can never be paid for. Go to the reviews and discussion
Reviews and chat · Product news · Send it on · Run this company? Claim it here · Report it
Cobrain has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
Alternatives to Cobrain
Engramic®
Organisational memory for AI: a knowledge graph your team authors as work happens
AI Agents & Infrastructure0 votes. Log in to add your vote for Engramic®Atomic Bot
Cloud hosting for AI agents running 24/7 with no setup
AI Agents & Infrastructure0 votes. Log in to add your vote for Atomic BotSectr
Deploy your AI agent in one click
AI Agents & Infrastructure0 votes. Log in to add your vote for SectrGAIM
Hosted shared memory for AI assistants
AI Agents & Infrastructure0 votes. Log in to add your vote for GAIM
