Cobrain vs RitualDev
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Cobrain compared with RitualDev
| Detail | 
Cobrain | R
RitualDev |
|---|
| What it does | Shared memory for Claude, ChatGPT and your AIs
| Autonomous AI Agent Defense, Sandboxing & Zero-Leak Studio
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| Stage | Startup
| Not given
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| Founded | 2026
| Not given
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| Based in | IT
| Not given
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| Pricing model | Not given
| Freemium
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| 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.
| Community Core: Free (open-source CLI tools). Pro Individual: $15/month (includes native macOS & Windows GUI, cloud backup, priority endpoints). Team Cluster: $99/month base (for 5-50 developers). Enterprise Governance: Custom annual contract.
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| Key features | - 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
| - Native kernel sandboxing on Linux, macOS, and Windows
- Bubblewrap and Landlock on Linux
- Apple Seatbelt sandbox on macOS
- AppContainer isolation on Windows
- Real-time kernel telemetry in VS Code, Cursor, and Windsurf
- 1-click secret redaction with QuickFix
- Strict CIDR egress filtering
- Anti-exfiltration hooks for /proc and SSH keys
- Database wire proxy with virtual schema masking
- 96.7% token compaction with JIT disclosure
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| What makes it different | - Free plan with no expiration for solo users
- Receivers of shares never pay
- Built by an agency using it daily with 648 notes
| - Zero-leak defense with OS-level kernel sandboxing across all three operating systems
- 96.7% token compaction reduces LLM context and billing costs
- 100% air-gapped offline-first architecture with zero telemetry
- Automated secret detection and redaction in real-time
- Free open-source Community Core with optional paid Pro and Enterprise tiers
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| Free plan | Not given
| Not given
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| Open source | Not given
| Not given
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| Platforms | Not given
| Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 5 ● no change since last check | 2 ▲ +2 (up) since last check |
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| Trust Flow (Majestic) | 7 | 3 |
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| Citation Flow (Majestic) | 27 | 21 |
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| Referring domains (Majestic) | 15 | 16 |
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4 details filled in for both companies.
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