Open Educational Resources (OER) and Zero Textbook-Cost (ZTC) Materials: Subject-Specific OER Materials

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Khan Academy is a nonprofit with the mission to provide a free, world-class education for anyone, anywhere

The Wisc-Online open educational resource library contains over 2800 learning objects that are freely accessible to teachers and students at no cost.

OER by Discipline Directory contains curated links to OER resources including general computer science, artificial intelligence, computer science history, information systems
programming and software and hardware.

Discusses Programming and Computation Fundamentals, Programming Languages, Applied Programming, Operating Systems, Databases and Data Structures, Web Design and Development and Networks.

CLARK describes itself as having the largest platform that provides free cybersecurity curriculum materials.

The text, labs, and review questions in this book are designed as an introduction to the applied topic of computer security. With these resources students will learn ways of preventing, identifying, understanding, and recovering from attacks against computer systems. This text also presents the evolution of computer security, the main threats, attacks and mechanisms, applied computer operation and security protocols, main data transmission and storage protection methods, cryptography, network systems availability, recovery, and business continuation procedures.

The text, labs, and review questions in this book are designed as an introduction to the applied topic of computer security (cybersecurity). With these resources students will learn ways of preventing, identifying, understanding, and recovering from attacks against computer systems. This text also presents the evolution of computer security, the main threats, attacks and mechanisms, applied computer operation and security protocols, main data transmission and storage protection methods, cryptography, network systems availability, recovery, and business continuation procedures.
This resource includes up-to-date information in an ever-changing field and virtualized labs that students can use to have a hands-on experience with actual security tools-taken from description.

According to the publisher The Ethics of Cybersecurity is the first systematic overview of ethics of cybersecurity including case studies. It provides a combined focus on structural, systemic traits and topical debates. It also contains rich case studies on practical ethical problems of cybersecurity.

An Introduction to Computer Networks, a free and open general-purpose computer-networking textbook, complete with diagrams and exercises. It covers the LAN, internetworking and transport layers, focusing primarily on TCP/IP. Particular attention is paid to congestion; other special topics include queuing, real-time traffic, network management, security, mininet and the ns simulator.
The book is suitable as the primary text for an undergraduate or introductory graduate course in computer networking, as a supplemental text for a wide variety of network-related courses, and as a reference work.

Suppose you want to build a computer network, one that has the potential to grow to global proportions and to support applications as diverse as teleconferencing, video on demand, electronic commerce, distributed computing, and digital libraries. What available technologies would serve as the underlying building blocks, and what kind of software architecture would you design to integrate these building blocks into an effective communication service? Answering this question is the overriding goal of this book—to describe the available building materials and then to show how they can be used to construct a network from the ground up.

Contains links to various OER Textbooks about computer networking.

This open textbook for Operating Systems was created under an ALG Affordable Materials Grant. Topics covered include OS Structures, Processes, Threads, Deadlocks, Memory Management, File System Interface, and Cloud Computing Concepts.

Topics include: TCP/IP Level Attacks, Port Scanning, DDoS, Footprinting and Social Engineering, Enumeration
Programming for Security, Professionals, Operating System Vulnerabilities, Embedded System Security, Hacking Web Servers
Hacking Wireless Networks, Cryptography and Protecting Networks with Security Devices

Think Python is a concise introduction to software design using the Python programming language. Intended for people with no programming experience, this book starts with the most basic concepts and gradually adds new material. Some of the ideas students find most challenging, like recursion and object-oriented programming, are divided into a sequence of smaller steps and introduced over the course of several chapters.

Think Java is a hands-on introduction to computer science and programming used by many universities and high schools around the world. Its conciseness, emphasis on vocabulary, and informal tone make it particularly appealing for readers with little or no experience. The book starts with the most basic programming concepts and gradually works its way to advanced object-oriented techniques.

This section of Open Stax contains a collection of OER economics textbooks.

Principles of Economics 3e covers the scope and sequence of most introductory economics courses. The third edition takes a balanced approach to the theory and application of economics concepts. The text uses conversational language and ample illustrations to explore economic theories, and provides a wide array of examples using both fictional and real-world scenarios.

Principles of Microeconomics 3e covers the scope and sequence of most one semester introductory microeconomics courses. The third edition takes a balanced approach to the theory and application of microeconomics concepts.

CORE (Curriculum Open-access Resources in Economics) Econ's vision is that a radically transformed economics education can contribute to a more just, sustainable, and democratic world in which future citizens are empowered by a new economics to understand and debate how best to address pressing societal problems.

Models in Microeconomic Theory covers basic models in current microeconomic theory. Part I presents models of an economic agent, discussing abstract models of preferences, choice, and decision making under uncertainty, before turning to models of the consumer, the producer, and monopoly. Part II introduces the concept of equilibrium, beginning, unconventionally, with the models of the jungle and an economy with indivisible goods, and continuing with models of an exchange economy, equilibrium with rational expectations, and an economy with asymmetric information. Part III provides an introduction to game theory, covering strategic and extensive games and the concepts of Nash equilibrium and subgame perfect equilibrium. Part IV gives a taste of the topics of mechanism design, matching, the axiomatic analysis of economic systems, and social choice.

Principles of Macroeconomic Literacy emphasizes basic economic concepts such as value and cost in developing macroeconomic ideas.

Project Gutenberg is a library of over 70,000 free eBooks

This book is divided into two parts. Part I is a Composition Handbook designed to teach students the components of the writing process and the conventions of various forms of school and college writing assignments. Part II is an Anthology of Literature designed to help students read actively, analyze, understand, enjoy, and appreciate stories, poems, and plays by a diverse and inclusive group of exceptional writers.

This OER explains the fundamentals of grammar.

This chapter from the OER by Discipline Directory provides links to various OERs that can be used for English language literature and writing.

This textbook takes a distinctly socio-historical approach to introducing Early American literature.

The Walt Whitman Archive endeavors to make Whitman's vast work freely and conveniently accessible to scholars, students, and general readers.

This is a community translation of the earliest English epic poem, Beowulf.

This site provides materials for Harvard University's Chaucer classes It provides a wide range of glossed Middle English texts and translations of analogues relevant to Chaucer's works, including a line by line translation of Canterbury Tales.

The emphasis in this anthology is on non-Western and European works, with only the British authors who were the most influential to European and non-Western authors (such as Shakespeare, whose works have influenced authors around the world to the present day).

This text covers the periods of the Seventeenth and Eighteenth Centuries, The Age of Reason, and The Near East and Asia The Long Nineteenth Century, Romanticism, Realism, The Twentieth Century and Contemporary Literature, Modernism, Postcolonial Literature and Contemporary Literature. Texts from a variety of genres and cultures are included.

Libre Texts provides OER books about English composition.

A list of open textbooks by the American Institute of Mathematics.
Read the licenses carefully as Open Textbooks are not necessarily OERs.

Introductory Statistics follows scope and sequence requirements of a one-semester introduction to statistics course and is geared toward students majoring in fields other than math or engineering. The text assumes some knowledge of intermediate algebra and focuses on statistics application over theory. Introductory Statistics includes innovative practical applications that make the text relevant and accessible, as well as collaborative exercises, technology integration problems, and statistics labs.

Includes college level mathematics

Milne Open Textbooks is a collection of open textbooks authored and peer-reviewed by SUNY faculty and staff.
Math related textbooks can be found under the letter M.

Beginning Spanish ¡Empecemos por aquí! focuses on the development of communication skills in interpretive, interpersonal, and presentational modes while centering student voices. Activities engage learners in real exchanges of information on topics that are relevant to adult students. In addition to language-acquisition learning outcomes, this text supports learning outcomes in diversity, equity, inclusion, cultural sustainability, and social justice.

This peer-reviewed textbook is designed for the true beginner with U.S. college students in mind. It contains themed chapters, which are divided into 8 sections. Each section has its own set of learning objectives, and is further separated into three types of assignments, Para estudiar en casa (with detailed explanations), Para practicar en casa (homework exercises), and Para practicar en clase (paired and group classwork activities). The explanations and primary input are written to be easily comprehensible. The individual exercises are geared towards acquisition of form and function, and the communicative classwork exercises promote interpersonal exchanges between students. The digital copy includes some embedded audio files, and we are developing a website to house many more resources.

College Physics 2e introduces topics conceptually and progresses through clear explanations in the context of career-oriented, practical applications, and meets the scope and sequence of an algebra-based physics course. The narrative of physics and scientific discovery has been even further expanded to focus on including more diverse contributors to the field. Building on the success of the first edition the authors have increased focus on interdisciplinary connections, including enhancements to biological and medical applications. The problem solving approach has been revised to further unify conceptual, analytical, and calculation skills within the learning process, the authors have integrated a wide array of strategies and supports throughout the text for students.

University Physics is a three-volume collection that meets the scope and sequence requirements for two- and three-semester calculus-based physics courses. Volume 1 covers mechanics, sound, oscillations, and waves.

University Physics is a three-volume collection that meets the scope and sequence requirements for two- and three-semester calculus-based physics courses. Volume 2 covers thermodynamics, electricity and magnetism.

University Physics is a three-volume collection that meets the scope and sequence requirements for two- and three-semester calculus-based physics courses. Volume 3 covers optics and modern physics.

The Physics Living Library is a principal hub of the LibreTexts project, which is a multi-institutional collaborative venture to develop the next generation of open-access texts to improve postsecondary education at all levels of higher learning.