Best Free Science & Academic Books of 2026

Here are the 20 most popular free Science & Academic ebooks on Free-eBooks.net for 2026, ranked by reader rating and download volume — every title is free to download.

Last updated: November 9, 2026

1 The arrival of the extraterrestrials

The arrival of the extraterrestrials

Antonio Pinto Renedo | Philosophy

Rating:

This book is about the presence of extraterrestrials on our planet and their reasons for being here.

2 Physics for K-12

Physics for K-12

Sunil Kumar Singh | Science

Rating:

A resource on Physics for K-12 students

3 I am not I, Who am I?

I am not I, Who am I?

AiR-Atman in Ravi | Philosophy

Rating:

“If 'I' am not the body, this is known when 'I' die. And the mind is invisible. It is 'me' that's a lie.Then the question that faces me is WHO AM 'I'? –for I just realized I am not I.”

4 100 Diamond Quotes

100 Diamond Quotes

AiR-Atman in Ravi | Philosophy

Rating:

100 Diamond Quotes is a unique book. It is worth its weight in gold. It carries a treasure of a 100 Quotes written by AiR, each more precious than the exotic gems in a king's crown. Whatever wealth we create while on earth, we leave it behind when we die. What will we take with us? A treasure that is eternal and that treasure is in this book. It...

5 Quantitative Information Analysis III

Quantitative Information Analysis III

Susan Dean, Barbara Illowsky, Ph.D. | Mathematics

Rating:

This textbook is intended for introductory statistics courses being taken by students at two– and four–year colleges who are majoring in fields other than math or engineering.The book focuses on applications of statistical knowledge rather than the theory behind it.

6 Carbon Nanotubes

Carbon Nanotubes

Jose Mauricio Marulanda | Science Textbooks

Rating:

This book is a review on the literature and increasing research interests in the field of carbon nanotubes, fabrication techniques followed by an analysis on the physical properties of carbon nanotubes.

7 How to Create Vibrant Smart Villages in the World

How to Create Vibrant Smart Villages in the World

Sai Bhaskar Reddy Nakka | Science

Rating:

Smart village is the most decentralized system which would empower people to efficiently use various services and systems. Enable communities to address the challenges in their respective occupations and daily life. In the villages, the people could use smart technologies which are innovative and futuristic for sustainable development. In a smart...

8 Drones and the U.S. Government

Drones and the U.S. Government

Michael Erbschloe | Science

Rating:

The increased use of drones for civilian applications has presented many countries with regulatory challenges. Such challenges include the need to ensure that drones are operated safely, without harming public and national security, and in a way that would protect areas of national, historical, or natural importance. Unconfirmed reports indicate...

9 Applications of Nonlinear Control

Applications of Nonlinear Control

Meral Altınay | Engineering

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A book that will provide the reader with information on modern control techniques and results which cover a very wide application area.

10 Illusions - Maya

Illusions - Maya

Natarajan Nagarethinam | Philosophy

Rating:

The Eastern Mystics literature talks about Maya that create illusion in lives. Why does it do so? Maya is not a God. But science personified. Eastern scripture is science diluted to make the reader understand. The book explains about the Universe and the role of Maya. Modern science tanextlks about multi-verse. After reading this book the same...

11 Robust Adaptive Control

Robust Adaptive Control

Petros A. Ioannou, Jing Sun | Engineering

Rating:

A book about adaptive control that has grown to be one of the richest in terms of algorithms, design techniques, analytic tools and modifications.

12 Practical Handbook Of Zoology

Practical Handbook Of Zoology

Dr. Jawale C.S. Dr. Supriya Singh Gupta. | Science Textbooks

Rating:

This book is designed to guide and orient students of S.P.Pune University, Pune First year B.Sc. Program in their Zoology Practical course. Here all the practical from semester I and semester II are covered in detail with supporting diagrams and appropriate text information. After an extensive peer review system, this manual is configured to...

13 Diet and Exercise Expertise

Diet and Exercise Expertise

Bail | Science Textbooks

Rating:

Introducing Diet and Exercise Expertise - Better Physical Personal Development Through Better Living. Inside this eBook, you will discover the topics about diet basics, figure out how many calories you need, healthy eating means a healthy body, healthy recipes, exercise basics, determine your exercise routine and staying motivated for diet and...

14 Suffer No More

Suffer No More

AiR-Atman in Ravi | Philosophy

Rating:

Suffering is a choice. We don't need to suffer. This may come as a surprise but it is the Truth. We choose to suffer due to ignorance that drowns us in misery and sorrow. What is suffering? While we all experience it, have we gone on a quest to understand what the primary cause of misery is? We live in this ignorance, this myth, that suffering is...

15 The A to Z of Karma

The A to Z of Karma

AiR-Atman in Ravi | Philosophy

Rating:

If you plant tomatoes, will you get mangoes? Of course not! How is that possible? As you sow, so shall you reap! Such is the Law of Karma! The world is well aware of this Universal Law. This law states that every action is followed by a corresponding reaction. What you give is what you get! The world works like a boomerang. What goes around comes...

16 Essential Graduate Physics

Essential Graduate Physics

Konstantin K. Likharev | Science Textbooks

Rating:

A series of lecture notes and problems on 4 core physics courses (Classical Mechanics, Classical Electrodynamics, Quantum Mechanics, and Statistical Mechanics). Problem solutions are also available for free upon request.

17 A Infinidade

A Infinidade

Adolfo F. Vaz | Philosophy

Rating:

Este documento é um estudo meu realizado em meia vida o resumindo basicamente em observações, deduções e outras opiniões sendo certo também estudo influenciado em informação conhecida de outras fontes como relatórios e outros estudos Esforcei-me para que o documento se explicasse a si próprio Este documento é um estudo em filosofia...

18 The Physics of Gravity

The Physics of Gravity

Martin Cross | Science

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A revolutionary and unique visualization explaining how gravity creates the shapes of the Cosmos. Redacted until 2025, this long-form essay intends to educate and entertain alongside the live talk “This is the Shape of the Universe – or your money back!”. See www.WhatIsTheShapeOfTheUniverse.co.uk for booking.

19 Ritm surd

Ritm surd

Florentina Magdalena | Psychology

Rating:

I am romanian girl and I like to write, I create a book in romanian language, I will be glad if that book will be apreciate for people who feel same feelings like me.

20 Failed Intellect, Successful Criminality, Doomed Humanity

Failed Intellect, Successful Criminality, Doomed Humanity

Santosh Jha | Psychology

Rating:

Your personal wellness and success cannot remain unaffected by the insanity and depravity of society-culture-polity. As you discover the pathology of the pandemic of milieus; you shall embark upon rightful remedies for fitness of your individuality. This eBook journeys you through landscapes of madness to drive you home to best life-living...

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