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The Biggest and Most Authoritative Library of Open-Source UX Design Resources

Open-Source, Open-Access Literature

The democratization of design knowledge is at the very heart of our mission. That’s why—over 19 years after we started—we will never stop bringing leading designers, bestselling authors, and Ivy League professors together to create open-source, free-to-access textbooks on UX design. This is the world’s most comprehensive compendium of design knowledge, made available to everyone around the world.

The Encyclopedia of Human-Computer Interaction, 2nd Ed.

The Encyclopedia of Human-Computer Interaction, 2nd Ed.

Free textbooks written by more than 100 leading designers, bestselling authors, and Ivy League professors. We have assembled our textbooks in a gigantic encyclopedia, whose 4,000+ pages cover the design of interactive products and services such as websites, household objects, smartphones, computer software, aircraft cockpits, and what have you. Name an item of design interest, and you'll probably find it discussed inside.

Table of Contents

Research Bibliography

Browse the world’s largest Wiki Bibliography on human-centered technology, comprising 138,000 authors in more than 127,000 publications.

Latest UX Design Articles

UX Daily is the world’s largest free online resource on UX Design, with new articles published every day.

Contributing Authors

We are honored to have these highly regarded professors and experts as contributing authors of our educational materials:

Don Norman
Don Norman Director of The Design Lab at the University of California

Don Norman is widely regarded as the creator of the term “UX design.” An expert in design, usability, and cognitive science, Norman strongly advocated for user-centered design, which now underpins almost all design fields. His ideas on aesthetics, affordances, and usability profoundly impact the way we design everything, from doors to software applications.

In 1993, he joined Apple as a User Experience Architect—the first-ever use of the phrase “user experience” in a job title. Norman’s books, The Design of Everyday Things and Emotional Design, are regarded as essential readings for any design student. He is currently director of The Design Lab at the University of California, San Diego, and is also co-founder of the Nielsen Norman Group.

Don Norman is the author of numerous books including "Emotional Design," and more recently, "Living with Complexity." He is co-founder of the Nielsen Norman group, a professor at KAIST (in Korea), an IDEO fellow, and a design theorist, studying the fundamentals of modern design.

Donald A. Norman has a Bachelor of Science in Electrical Engineering from MIT and a Doctor of Philosophy in Psychology from the University of Pennsylvania. He also holds an honorary degree from the University of Padua, Italy. He has been a professor of Computer Science (at Northwestern University), Psychology, and Cognitive Science (at the University of California, San Diego).


Lene Nielsen
Lene Nielsen

Lene Nielsen is an Associate Professor at ITU, Department of Business IT, and Head of the TIME (Technology, Innovation, Management, and Entrepreneurship) research group.

Her research focuses on personas, and she was the first in the world to write a Ph.D. about personas. Her research topics include the many aspects of the development and use of personas, such as:

  • Global personas

  • Personas based on quantitative data

  • Persona descriptions as communication to specific and different audiences

  • The relationship between persona description and data

  • The use of personas in agile development

  • Personas in service design.

Lene Nielsen har published two books on personas and more than 80 papers

Lene Nielsen teaches service design and different aspects of innovation.


Caroline Hummels
Caroline Hummels Professor

Caroline Hummels is a professor of Design and Theory for Transformative Qualities at the department of Industrial Design at the Eindhoven University of Technology (TU/e). Her activities concentrate on designing and researching transforming practices. With her team and external stakeholders, including the Provence of North-Brabant, Philips Design, RISE, Rijkswaterstaat, Enpuls, and ZET, she leverages emerging technologies through which they jointly change practices to navigate transforming societies towards sustainable futures. Doing so, she focuses on being-in-the-world theories, embodied and aesthetics interactions, imagination, data-enabled design, and participatory sensemaking. She researches and questions transforming practices and societies through theoretical lenses, including design-philosophy correspondence, in which philosophy informs design practice, and design practice is used to philosophize, in order to tackle imminent societal challenges. Caroline is founder and member of the steering committee of the Tangible Embedded, and Embodied Interaction (TEI) Conference, editorial board member of the International Journal of Design, member of the Dutch Design Week sounding board, and ambassador of CLIKCNL for the Key Enabling Methodologies related to ‘Participation and co-creation. Moreover, she has given a large number of keynote speeches, invited lectures and workshops at conferences, international universities, and for industry and governmental institutes worldwide.


Frank Spillers
Frank Spillers MS

Frank Spillers is a web and software usability expert, a distinguished speaker, author, and internationally respected Senior Usability practitioner. He is an expert in improving the design and usability of large-scale websites, web applications, desktop, and mobile apps. He is the founder of the usability consultancy firm Experience Dynamics. With an MSc in Cognitive Science and eleven years of experience in UX design, Spillers has worked with clients such as Hewlett-Packard, Intel, and Microsoft. He is an experienced practitioner of user-centered and emotional design and has developed a new research technique called “cognitive archeology,” which aids experts when researching emotional product design.

Before founding Experience Dynamics in 2001, Frank managed usability consulting for WebCriteria (now Coremetrics) and worked with students of Dr. Donald Norman (the grandfather of User-Centered Design) at Intuitive Design, a San Diego-based User-Centered Design consultancy. His current clients include Microsoft, Intel, IBM, Logitech, GE, Nike, Hewlett-Packard, KeyBank, Four Seasons, Chase, Target.com, and Whitepages.com. He has trained thousands of teams and individuals in usability and User-Centered Design techniques in private as well as public settings.

Frank received his Master's in Cognitive Science (MS) from Birmingham University, the UK in the user experience of collaborative (social) virtual (3D) environments.


Kristina Höök
Kristina Höök Professor

Kristina Hook is a professor in Interaction Design at the Royal Institute of Technology (KTH) in Sweden. She started and now works in the Mobile Life center. She also upholds a part-time position at SICS (Swedish Institute of Computer Science).

Her research interests include affective interaction, somaesthetic design, the internet of things, and anything that makes life with technology more meaningful, enjoyable, creative, and aesthetically appealing.


Alan Dix
Alan Dix Professor

Alan Dix is a computing professor at the Human-Computer Interaction (HCI) Centre of the University of Birmingham, UK. He is a co-author of the global, bestselling university-level textbook Human-Computer Interaction. Dix is passionate about designing things that connect humans and computers—everything from machines to software. He has co-authored and published hundreds of papers on HCI, covering topics ranging from information visualization and usability to designing for appropriation.

Alan Dix has taught and researched human-computer interaction (HCI) for nearly 30 years. His interests in the area range from the application of formal techniques in interface design to methods for enhancing innovation and creativity. He began as a mathematician at Cambridge University and moved into computing and HCI whilst doing his Ph.D. at the University of York. His background also includes work on farm crop sprayers and remote-controlled submarines. He was one of the founder-director of two Internet dot.com companies.


We only invite contributions from globally recognized authorities within their respective design fields.

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