Open Cosmos

An open digital garden for building your personal knowledge graph. Local-first, data sovereignty.

Personal Knowledge Graph
Connect your ideas through knowledge graphs, discover relationships between concepts, and build your own thinking network.
Local-First
Data stored locally ensures privacy and security, while supporting multi-device synchronization.
Open Ecosystem
Support for multiple import/export formats, seamless integration with mainstream tools, creating an open knowledge ecosystem.

Core Features

Comprehensive tools designed for knowledge workers

Knowledge Graph
Visualize your knowledge network and discover hidden connections
Local Storage
Complete data localization ensuring privacy and security
Open Integration
Support for multiple formats, seamless integration with existing tools

User Testimonials

Hear what our users have to say

"Open Cosmos has helped me build a complete knowledge system. The knowledge graph feature has significantly improved my learning efficiency."

John Smith

Researcher

"The local-first design philosophy gives me peace of mind. My data is completely under my control, and multi-device sync is very convenient."

Sarah Lee

Product Manager

"The open ecosystem design allows it to integrate well into my workflow and works smoothly with other tools."

Emily Chen

Designer