SECOND BRAIN
Extend Your Thinking Digitally
Build your personal second brain with Stacks to capture, organize, and access your ideas and knowledge
What is a Second Brain?
A second brain is a digital system that extends your thinking and memory beyond the limits of your biological brain
Why You Need a Second Brain
Information Overload
We're bombarded with more information than we can process or remember. A second brain helps you capture and organize what matters.
Creative Connections
Your biological brain excels at making connections but needs raw materials. A second brain gives you access to more ideas to connect.
Knowledge Compounding
Unlike your biological memory which fades over time, a second brain creates a system where your knowledge compounds and grows.
Key Benefits
Capture Everything
Save articles, notes, ideas, and insights without worrying about where they go or how they're organized.
Find Anything
Powerful search and organization means you'll always be able to find what you need when you need it.
See Connections
Discover surprising relationships between ideas and create new insights through AI-powered connections.
Why Stacks is the Perfect Second Brain
Built with cutting-edge AI to extend your thinking and knowledge management capabilities
Intelligent Organization
Unlike traditional note-taking apps, Stacks uses advanced AI to automatically organize your content, suggest connections, and help you find exactly what you need.
Automatic categorization and tagging of saved content
AI-suggested connections between related ideas
Content summarization and key insight extraction
Natural language search that understands concepts
Effortless Capture
Save anything with a single click. Web articles, notes, quotes, and ideas are automatically processed and organized.
One-click saving from any website
Automatic extraction of key information
Save quotes and highlights with context
Dynamic Organization
No more manual folder sorting. Stacks organizes your content automatically and learns your preferences over time.
AI categorization that improves over time
Custom collections for your specific projects
Flexible organization that adapts to your thinking
Intelligent Connections
Discover relationships between ideas you might never have seen. AI suggests connections across your knowledge base.
AI-suggested connections between content
Visual knowledge graph of your second brain
Serendipitous discovery of related ideas
Semantic Search
Find exactly what you're looking for with natural language search that understands concepts, not just keywords.
Ask questions in natural language to find content
Search by concept and meaning, not just keywords
Instantly find the right information when you need it
Knowledge Chat
Talk to your second brain. Ask questions, explore ideas, and generate insights from your personal knowledge base.
Chat with your knowledge base using AI
Ask questions that reference your saved content
Generate new insights and ideas from your knowledge
The PARA Method with Stacks
How Stacks implements the popular PARA organization method with AI assistance
Projects
Short-term efforts with clear outcomes and deadlines. Stacks helps you group all resources related to your active projects.
How Stacks helps: Create project collections where AI automatically suggests relevant content and resources for each project you're working on.
Areas
Ongoing responsibilities and interests you want to maintain over time. Areas represent your roles and long-term commitments.
How Stacks helps: AI recognizes content related to your ongoing areas of responsibility and suggests appropriate categorization and connections.
Resources
Topic-based information and reference materials that may be useful in the future. Your knowledge library for future access.
How Stacks helps: Automatically categorizes saved content by topic and creates a searchable knowledge base organized by subject matter.
Archives
Inactive items from the other categories that you want to keep for future reference but don't need active access to.
How Stacks helps: AI suggests when content might be moved to archives based on your usage patterns, keeping your active collections focused and relevant.
The best part? Stacks implements PARA with AI assistance, so you don't have to manually organize everything - just save content and let Stacks do the work.
Your Second Brain in Action
Real-world applications of using Stacks as your second brain
Content Creation
Store research, ideas, inspirations, and reference materials for easy access when creating content. Never start from a blank page again.
"I save interesting articles, quotes, and ideas as I browse the web. When it's time to write, I use Stacks to explore my saved content on the topic, and the AI suggests connections I hadn't considered. It's revolutionized my writing process."
Jamie, Content Creator
Research Projects
Organize complex research with automatic categorization. Find connections between sources and generate insights across your materials.
"I'm researching for my dissertation, and Stacks has been invaluable. I save all my sources, and the AI helps me find patterns and connections across papers. The semantic search means I can find exactly what I need in seconds."
Alex, PhD Student
Learning & Education
Create a personal knowledge database for courses, subjects, and fields of study. Build connections between concepts for deeper understanding.
"As I learn new programming languages and frameworks, I save examples, tutorials, and documentation in Stacks. When I need to recall something, I can chat with my knowledge base and get exactly what I need."
Taylor, Software Engineer
Professional Development
Track industry trends, save important articles and resources, and build a knowledge base of best practices relevant to your career.
"I use Stacks to keep up with my field. I save articles, case studies, and insights. The AI organization means I've rediscovered important content I'd forgotten I saved, making connections I wouldn't have seen."
Morgan, Marketing Strategist