Auto-linked
Related pages and ideas connect themselves
A visual map of pages, notes, and ideas
Connections appear automatically as you browse
A second brain you can actually explore


Related pages and ideas connect themselves
See structure and context instead of a flat history log
Your knowledge map stays on your machine
No tagging, copying, or backlink chores required
Get priority onboarding, founder-circle perks, and direct influence on what we build next.
SECOND BRAIN
Click a capability to see how Ocno turns browsing into memory, on-page context, and a living knowledge graph.
NOW SHOWING
Ocno turns pages and ideas into a living map you can inspect, traverse, and grow without manual upkeep.
Ocno turns pages and ideas into a living map you can inspect, traverse, and grow without manual upkeep.
Query your memory naturally and jump into the right source, cluster, or connection without folders, tags, or exact keywords.
Unlike traditional second-brain tools, Ocno brings relevant memory back into the page you are reading instead of pushing you into a separate workspace.
Earlier pages, sources, and related threads resurface when they matter, so recall becomes part of browsing instead of a later search task.
KNOWLEDGE MAP
Ocno collects the visual graph from the pages you actually open, links them on-device, and keeps the resulting knowledge map private to you.
When you open pages, Ocno captures their local context, titles, and relationships so they can appear as nodes in your graph. You do not need to manually save, tag, or rewrite what you read to preserve it.
Shared entities, repeated topics, and adjacent ideas are compared locally so the graph can cluster related pages and reveal structure without sending your reading history away for processing.
The resulting graph lives on your device as your own knowledge layer. It is not uploaded as a cloud profile, and the structure of what you know remains on your side of the boundary.
KNOWLEDGE
A useful PKM layer should show structure, preserve context, and remove the maintenance burden that makes most systems decay.
Thanks to its compiler-optimized engine and full GPU utilization, Ocno delivers up to 5–10× higher performance compared to traditional CPU-based in-browser model execution.
Smaller models like Qwen3 4B (GPU and 4GB RAM needed) can achieve quality comparable to large earlier models such as GPT-4o in many tasks proven by various benchmarks.
Advances in quantization and model compression drastically reduced memory requirements, making powerful models practical on everyday devices. You can now run model comparable to GPT-4o on just 3–4 GB of RAM — enabling capabilities once limited to large cloud systems.
Minimum: 8GB
Good: 16GB
Best: 32GB+
Minimum: M1
Good: M1 Pro
Best: M3 Max+
Recommended Baseline
MAKER
I replaced my social life with shipping.
