As far as I know, some of these books only exist in English.
Do your research if they are not in your preferred language.

The Gene Keys – Richard Rudd

This book is an invitation to begin a new journey in your life. The beating heart of the Gene Keys Synthesis, this is the codebook describing all human states of consciousness, from the deepest fear-based patterns to the most awe-inspiring possibilities in our DNA. A vast work of vision and depth, this is a book to contemplate over a lifetime. It can be used in many different ways – as a companion to explain the Gene Keys in your Profile, as an oracle and daily inspiration or as a spiritual path in its own right. Many people have testified that simply reading this book brings them a profound understanding of their life, relationships and higher purpose. Written in a poetic yet practical style, the Gene Keys book points you towards the beauty that already lies inside you and invites you into a world where anything is possible.  – Genekeys.com

The Naked Bible – Mauro Biglino - Giorgio Cattaneo

An official Bible translator speaks his shocking truth. Undressing the Bible: in Hebrew, the Old Testament speaks for itself, explicity and transparently. It tells of mysterious beings, special and powerful ones, that appeared on Earth. Aliens? Former earthlings? Superior civilizations that have always been present on our planet? Creators, manipulators, geneticists: Aviators, warriors, despotic rulers. And scientists. Scientists possessing very advanced knowledge, special weapons and science fiction-like technologies.
Once naked, the Bible is very different from how it has always. been told to us: it does not contain any spiritual teaching, nor an omnipotent and omniscient God. No eternity, no apples and no creeping, tempting, serpents. No winged angels. Not even the Red Sea: the people of the Exodus just wade through a simple reed bed. – Amazon

The Gods of Eden – William Bramley

Human history is a seemingly endless succession of bloody conflicts and devastating turmoil. Yet, inexplicably, in the light of astonshing intellectual and technological advancement, Man’s progress has been halted in one crucial area: he still indulges the primitive beast within and makes war upon his neighbors.
As a result of seven years of intense research, William Bramley has unconvered the sinister thread that links humanity’s darkest events — from the wars of the ancient pharaohs to the assissination of JFK. In this remarkable, shocking and absolutely compelling work, Bramley presents disturbing evidence of an alien presence on Earth — extraterrestrial visitors who have conspired to dominate Humankind through violence and chaos since the beginning of time…a conspiracy which continues to this very day. – Williambramley.com

Starseed: The Third Millennium - Ken Carey

Living in the Posthistoric World. Explores the spritual and social forces underlying changes in the ways humans view their relationship to the planet, examines the future of the economy and the environment, and offers guidance in a time of change.
All that stands between you and awareness of the Being at the source of life can be released as easily as a sigh. Even now, you are but a breath away from the subtle perceptual shift that allows your identity to be transformed from solitary individual to the source of every individual, from the object of attention to the very flow of attention itself, from the contents of consciousness to the awareness that brings all content to light. When you know yourself in this way, you recognize the others of your kind. You perceive us. We communicate. As our communication flows into communion, you recognize yourself in us. You awaken to awareness of our common source. – Amazon

E.T. 101 – Zoev Jho

The Old World’s systems are in collapse. Those who wish to continue in those systems will be graciously asked to leave, because their motivator, fear, is being relocated to another planet where its subdivisions are still welcome. In fulfillment of Native American prophecies, intergalactic and interdimensional forces have gathered on this planet at this time to liberate her in the name of Spirit. The Earth has elected to evolve beyond limitation; however, anyone who opts to explore that process further is free to do so — just not on this planet. Such people will be allowed to continue their experiments with limitation on some other piece of planetary property that is at a less advanced stage in its evolution.
"This is the most critical moment of change in this planet’s history, and your assistance in that change is vital.” – Read on the web

The Prism of Lyra - Lyssa Royal and Keith Priest

The Prism of Lyra is an exploration of Human Galactic Heritage. This book examines the idea of creation in a different light. In contrast to the notion that humans are the result of creation, it explores the idea that the collective humanoid consciousness (or soul) created our universe for specific purposes. What are those purposes? Who is involved? These questions and many more are addressed, resulting in startling possibilities.
The Prism of Lyra then traces various off-planet races (Lyra, Vega, the Pleiades, Orion, Zeta Reticuli, and more) through their own evolution and ties them into the developing Earth. Highlighted is the realization of our galactic interconnectedness . . . and our shared desire to return home. – Amazon

Life and Teaching of the Masters of the Far East - Baird T. Spalding

On 22 December 1894, eleven American scientists met in Potal, a small village in India. Sceptical by nature, they did not accept any truth a priori, but certain religious phenomena intrigued them. They decided to see for themselves the prodigies performed by the Eastern Masters. In India, Tibet and Nepal, there are men with astonishing faculties, who communicate at a distance, travel by levitation and heal the sick. Scientists were gradually fascinated to discover previously unknown physical and psychic laws: thanks to an asceticism with well-established rules, the spirit became capable of mastering matter, and even of leaving its carnal envelope. In contact with this invisible hierarchy of Masters of Wisdom, they begin a spiritual journey that will lead them to the discovery of their profound, timeless and eternal Self. – Amazon

The Psychology of Transformation in Yoga - Atreya

The ancient sciences of Yoga, Ayurveda and Jyotish (Indian Astrology) have become mainstream subjects and professions in the Western world. Their popularity is growing on a daily basis due to the holistic and individualized approach that each encompasses. There is little doubt that these systems of health and transformation will continue to grow and expand in the modern world.
Unfortunately, these systems have been introduced to the West without a clear explanation of the basic philosophy or vision that supports them. The spiritual vision of the universe is called Samkhya and is an existential experience of creation as seen by the Vedic Rishi’s, or seers. All of the ancient Indian sciences are based on this vision of a conscious, expanding universe. This provides the basis for a holistic vision of the world and the human being that interacts within this conscious universe. This book, The Psychology of Transformation in Yoga, provides not only a simple explanation of this complicated system, but also presents the Samkhya as a practical method of transformation. – Amazon

Oversoul Seven Trilogy, Jane Roberts

Inspired by Jane Roberts’ own experiences as the author of the immensely popular "Seth" books, these three novels — now collected in one volume — are one of the most imaginative tales ever written. Jane Roberts’ beloved character, Oversoul Seven, an ageless student of the universe, explores the entire framework of our existence.
As we follow Seven’s education, our own beliefs about life, death, dreams, time and space are challenged and stretched, leaving us with a refreshing and provocative perspective on the true nature of reality. The adventures of Oversoul Seven, are at once an intriguing fantasy, a mind-altering exploration of our inner being, and a vibrant celebration of life. English – Amazon

Heart of the Comet – David Brin and Gregory Benford

The novel tells the story of an expedition beginning in the year 2061 to capture Halley’s Comet into a short period orbit so that its resources can be mined. The discovery of life on the comet and the subsequent survival struggle against the indigenous lifeforms and the illnesses and infections they cause leads to a breakdown of the expedition crew and the creation of factions based around political beliefs, nationality and genetic differences between the “percells”—genetically enhanced humans—and the “orthos”—unmodified humans. As well as the fighting between these factions, Earth rejects the mission due to fear of contamination from the halleyform life and attempts to destroy the comet and those living upon it. Eventually the mission crew on Halley are forced to accept that they can never return to earth and create a new biosphere within the comet’s core and in some cases evolve into symbiotic organisms with the halleyform life.  – Wikipedia

Snow Crash – Neal Stephenson

Snow Crash is a science fiction novel by American writer Neal Stephenson, published in 1992. Like many of Stephenson’s other novels it covers history, linguistics, anthropology, archaeology, religion, computer science, politics, cryptography, memetics and philosophy.
The book presents the Sumerian language as the firmware programming language for the brainstem, which is supposedly functioning as the BIOS for the human brain. According to characters in the book, the goddess Asherah is the personification of a linguistic virus, similar to a computer virus. The god Enki created a counter-program which he called a nam-shub that caused all of humanity to speak different languages as a protection against Asherah (a re-interpretation of the ancient Near Eastern story of the Tower of Babel). - Amazon

StarMaker – Olaf Stapledon

The book begins with a single human narrator from England who is, via unexplained means, transported out of his body and finds himself able to explore space and other planets. After exploring a civilization on another planet in our galaxy at a level of development similar to our own that existed millions of years ago thousands of light years from Earth (the “Other Earth”) in some detail, his mind merges with that of one of its inhabitants, and as they travel together, they are joined by still more minds or group-minds.
This snowballing process is paralleled by the expansion of the book’s scale, describing more and more planets in less and less detail.
– Amazon

The Hyperion Cantos – Dan Simmons

A stunning tour de force filled with transcendent awe and wonder, a masterwork of science fiction that resonates with excitement and invention. On the world called Hyperion, beyond the reach of galactic law, waits a creature called the Shrike. There are those who worship it. There are those who fear it. And there are those who have vowed to destroy it. In the Valley of the Time Tombs, where huge, brooding structures move backward through time, the Shrike waits for them all. On the eve of Armageddon, with the entire galaxy at war, seven pilgrims set forth on a final voyage to Hyperion seeking the answers to the unsolved riddles of their lives. Each carries a desperate hope—and a terrible secret. And one may hold the fate of humanity in his hands.  – Amazon

The Shockwave Rider – John Brunner

In a world drowning in data and information and choking on novelty and innovation, Nickie Haflinger - a most dangerous fugitive who doesn't even appear to exist - provides a window onto a global society falling apart in all directions, with madness run amok and personal freedom surrendered to computers and bureaucrats.
Caught and about to be re-programmed, can he escape once again, defy the government and turn the tide of organizational destruction? – Amazon

Other books will be added as the mood takes me.