Knowledge as
Operating System
Where books become conversations, reading becomes discovery, and knowledge flows freely across every language, format, and ability.
One world library. Infinitely smarter.
Upload your library—or discover a new one—and get instant context, connections, and conversations that elevate how you read, listen, and learn.
Follow your blissRead anything, anywhere
Universal reader that works with any format—ePub, PDF, audiobook, or upload your own. One library, every device, always in sync.
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Ideas connect themselves
As you read, SPARK articles emerge—connections, insights, and conversations across books, authors, and ideas. Knowledge organizing itself.
Explore SPARK
Turn pages into conversations
Bookcasts transform reading into audio discussions and reflections. Listen while you commute, reflect while you walk, learn in the way that works for you.
Listen now
Study tools that think with you
Annotations that connect. Citations that generate themselves. Knowledge graphs that reveal patterns. Research tools built for how your mind actually works.
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A library that learns
Your collection grows smarter over time. Organization that adapts. Analytics that reveal your reading patterns. Cross-device sync that just works.
Build your library
Meet Malaika, your literary companion
Your personal AI librarian who knows every book you've read, every note you've taken, and every insight you've captured. Malaika doesn't just answer questions—she understands context, makes connections, and helps you discover patterns in your reading journey.
Chat with Malaika
Building the future together
Join our pilot community and help shape the future of learning and discovery. Free until October 15th, then choose your path: $12/month all-access or pay-as-you-grow. Early access to features as they evolve—bring your hardhat, this is a construction zone.
View pilot pricing
Your own presidential library
For educators, researchers, and knowledge organizations: Create your institutional collection. Every organization and knowledge influencer can have their own curated library with their content, resources, and insights—a living archive that grows with your community.
Start your library
Join the kaOS Community
Connect with readers, writers, and thinkers. Build your personal library and share your insights.
Free to start • No credit card required