Local-first · Privacy-forward · Founder-led
Obsidian for all your LLMs
Cortex is a local-first personal OS that unifies Claude, ChatGPT, Grok, Gemini and Cursor into one mind map, venture tracker, and approve-only marketing desk — built for entrepreneurs drowning in chat tabs who want a private second brain for their ventures.
What’s already running
Founder-dogfooded MVP on a Mac today. No fake customer logos, no invented user counts. Packaging and a public download are still blockers — this waitlist is the honest next step.
- Local SQLite workspacesYour ventures and history stay on your machine — local · no cloud for the core workspace.
- Projects + venture trackersHonest stages and blockers across the companies you’re building.
- Ask-your-brainQuery across your own linked chat history with citations back to source.
- Approve-only marketing deskDrafts campaigns and posts — nothing ships without your approval.
Claude · ChatGPT · Grok · Gemini · CursorMVP dogfooded privatelyPricing undecided (free beta first)
Product screens
Real UI from the Paper redesign. Sensitive labels are blurred where needed.
Silent demo
A short look at the current MVP. No voiceover, no staged testimonials.