You capture and link. Then what?
Most apps optimize for getting thoughts out of your head. That's the easy part. But then your notes pile up and you never look at them again. They fail to accomplish the most important goal: changing how you think.
The hard part is making ideas actually yours: integrating them into your mental models, retrieving them at the right moment, applying them automatically.
Deep knowledge requires writing, reflection, connection-making, and active recall to turn information into understanding. Your notes should make you smarter over time. Flint is designed so they do.
The deep knowledge cycle
Externalize
Structured capture with minimal friction
- Focus on taking notes not managing files and folders.
- Note types encode different thinking patterns (daily, evergreen, predictions)
- Daily notes encourage easy capture of ideas through daily routines.
Outcome: Ideas are captured as they come and are never lost.
Internalize
Routines, agent partnership, connections made visible
- Routines systematize recurring reflection (daily reviews, weekly syntheses)
- Agent understands note types and relationships, providing type-aware assistance
- Links and backlinks make connections explicit and discoverable
Outcome: Notes become more valuable over time.
Resurface
Spaced repetition, deep re-engagement
- Review system brings notes back at the optimal time based on recall performance
- Agent generates contextual prompts for deep re-engagement
- Backlinks surface where ideas recur, encouraging pattern recognition
Outcome: Your knowledge deepens over time.
See Flint in action
Low-friction daily notes entry. Quickly get ideas out of your head and into your notes.
Your agent suggests connections, asks clarifying questions, and helps you synthesize ideas.
Resurface notes with prompts that drive deep engagement at optimal intervals.
Intelligence built around your thinking
Don't lock your ideas in chatbot sessions you don't control. Think in your system and bring the AI to you.
Semantic Understanding
Your agent understands your system and can help you organize and find connections.
Type-Aware Assistance
Note types help guide the agent in your system. Define how it should assist with daily notes vs predictions vs evergreen.
Intentional Engagement
Deep engagement with your old notes through agent directed prompts.
Your knowledge stays yours
Local First
Your notes are just text files on your computer—portable, yours forever.
Open Source
Flint is fully open source. No vendor lock-in, community-driven development.
Open Format
Switch AI providers or run inference locally as models improve.
Built for people who think deeply
Researchers
Track papers, extract highlights, surface connections between research threads, resurface at optimal intervals to synthesize novel insights.
Product Builders
Capture strategy and design thinking, track competitors and patterns, resurface assumptions for calibration and adjustment.
Writers
Develop ideas over time, surface relevant thinking during drafting, resurface past writing to avoid repetition and build on prior thinking.
Lifelong Learners
Build deep understanding through spaced repetition, connect ideas across disciplines, watch thinking evolve over months and years.
Download Flint
Available for macOS, Windows, and Linux.
Note: Flint is currently in open beta. Like, an actual beta so expect some bugs and unfinished polishing as development continues.