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macOS app

View, Catalog and Mine PDF Files

“I use PDFs a lot, and most of the applications that I use for PDFs are cumbersome at best.
kOS makes a lot of intuitive sense to me. I’m very intrigued.”

Dr. Kevin Wehr

Professor, Cal State Sacramento

“I want kOS now! Every student will want kOS.”

James Wiser

Dean of Library Services & Educational Technology
Abilene Christian University

"The PDF is likely to remain the standard tool for preserving scholarly information.
A program such as kOS will give users the ability to give added value to their research
and will surely find a home with scholars around the world.”

Terry Ballard

Information Today

"kOS 1.0 is amazing! Where has this been all my life? I’m dumbstruck."

Alastair Williams

Professor of History, Humanities & Social Sciences
Clarkson University

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