An AI-native Chrome extension that captures everything you encounter online and organizes it intelligently — so you can finally close those 47 tabs.
Every open tab represents something you haven't decided about yet — a half-read article, a tool you might need, a conversation you want to return to. Browser tabs have become the junk drawer of modern knowledge work.
The average knowledge worker has 20-40 tabs open at any time, not because they need them all, but because closing a tab means trusting you can find it again. And most tools make that trust impossible.
Existing tools force users into two failure modes: organize nothing and drown in chaos, or organize manually and drown in maintenance.
What if you could have the delightful one-click capture of mymind, with the organizational depth your brain actually needs — but the AI handles all the organizing?
Calvin is built on a simple principle: humans should capture, AI should organize. Save anything in one click. Close your tabs with confidence. When you need something, it's exactly where your brain expects it to be — because the AI learned your patterns.
Calvin is the first product in a constellation of AI-native applications that understand who you are as a unique individual — not as a demographic. Your tabs are just the beginning. Your identity is everything.
The moment of capture is the product's most critical interaction. If saving a tab feels like work, people won't do it. Calvin had to make capture feel like closing a mental loop — the satisfaction of knowing something is handled.
Glassmorphism popup with one-click capture for tab, window, or all windows
Real-time title enhancement and project suggestion before save
Calvin operates across Chrome, web, and iOS — but shares a single AI engine that understands your complete digital context regardless of where you captured it.
Pinterest-style masonry grid with hierarchical project organization
Natural language search across all captured content
Calvin's AI engine is the connective tissue across all platforms. Powered by Claude API, it transforms raw tab captures into organized, searchable, enhanced knowledge — automatically.
Untitled - Figma→E-commerce Checkout Flow — FigmaNew conversation→Stripe Webhook Integration — Claudelocalhost:3000→Store App — Dev Server (Next.js)1706.03762.pdf→Attention Is All You Need — Vaswani et al.Calvin's visual language bridges the aesthetic world of mymind with the intelligence of an AI system. Glassmorphic panels create depth and layering, while subtle neural network patterns reinforce the product's AI-native identity.
Progressive disclosure: capture first, organize with AI assistance
Hierarchical project view with AI-suggested groupings
Calvin was built end-to-end using AI-assisted development — Claude Code for architecture, implementation, and iteration. This is a full-stack product designed, engineered, and shipped by one person.
Calvin is itself a demonstration of the thesis it embodies: one person with deep domain expertise, augmented by AI, can build a multi-platform product that traditionally required a team of 5-8 engineers plus designers. Every architectural decision, every component, every API integration was built through collaborative dialogue with Claude Code — not generated and pasted, but designed through iterative conversation.
Calvin is the first product in a constellation of AI-native tools. By starting with tabs — the most universal pain point in knowledge work — we're building the foundation for something much larger: AI that understands who you are as an individual.