Personal knowledge management, reimagined
Save once. Find it when it matters.
Capture is the second brain you were promised. Save anything from any source — tweets, articles, reels, PDFs — and AI organizes, connects, and resurfaces it exactly when you need it.
No credit card. No setup. Just save.
Thread: Why most people never benefit from what they read
The Zettelkasten method explained in 12 minutes
Farnam Street: How to read fewer books and retain more
The forgetting curve and spaced repetition for daily learning
The problem
You save everything. You benefit from almost none of it.
The average curious person has thousands of saves scattered across eight different platforms. None of them talk to each other. Most of them are never seen again.
Twitter bookmarks
1,400 saved. Never revisited.
YouTube watch later
82 videos. Still unplayed.
Browser tabs
47 open. You'll never go back.
Notion database
Perfectly organized. Totally ignored.
Instagram saves
Locked inside an app. Unsearchable.
Newsletter archive
Gold buried in your inbox.
How it works
Three steps. Then it just works.
Save from anywhere
One click from any browser, app, or platform. Tweet, reel, article, PDF, voice note — if it matters to you, Capture takes it.
AI organizes it quietly
No tagging, no folders, no setup. Capture reads what you save, understands it, and builds your knowledge graph in the background.
Find it when it matters
Ask a question, start a project, or just browse. Capture surfaces the exact thing you saved three months ago — and connects it to four other things you forgot you knew.
Features
Everything a second brain should do.
One inbox for everything
Tweets, bookmarks, PDFs, reels, articles, links, and notes. All sources. One place.
AI that actually organizes
Not just search. Capture builds a semantic map of what you know so it can surface connections you didn't make consciously.
Browser extension, one click
Save anything from any page without leaving your flow. No login screens, no copy-paste, no friction.
Ask your library
"What did I save about compound interest?" Just ask. Your second brain knows.
Automatic connections
Save a tweet today. Open an article next week. Capture shows you they were about the same idea.
Private by default
Your knowledge is yours. We don't train on your data, share it, or sell it.
Pricing
Start free. Upgrade when you're ready.
Free
$0
forever
- ✓Core capture (up to 100 saves/mo)
- ✓Basic AI categorization
- ✓Browser extension
- ✓Web app access
Pro
$9
/ month
- ✓Unlimited saves
- ✓Full AI surfacing & smart connections
- ✓Cross-source integrations (Twitter, Instagram, email)
- ✓Advanced search & Q&A over your library
- ✓Priority support
Early access open
Stop losing the ideas that matter to you.
Join thousands of curious people building a knowledge layer that actually works.
Join the waitlist — freeNo credit card required · Cancel anytime