Predicting the specific technologies that will dominate the world in 2090 is highly speculative, and it’s challenging to provide an accurate list of the top 20 future technologies with certainty. However, we can extrapolate from current trends and emerging technologies to speculate on what the future might hold. Keep in mind that these are speculative and may or may not come to fruition. Here are 20 potential future technologies for 2090:

1. Advanced Artificial Intelligence (AI): AI systems with human-level or even superhuman intelligence could revolutionize various industries.
2. Quantum Computing: Quantum computers will enable complex calculations and simulations, potentially transforming fields like cryptography and drug discovery.
3. Nanotechnology: Precision engineering at the nanoscale could lead to breakthroughs in medicine, materials science, and electronics.
4. Biotechnology: Advances in genetic engineering and synthetic biology could revolutionize healthcare, agriculture, and environmental conservation.
5. Space Exploration and Colonization: Humanity may have established colonies on Mars and beyond, with advanced spacecraft and infrastructure.
6. Renewable Energy: Highly efficient and sustainable energy sources, such as advanced solar panels and fusion power, could be the norm.
7. Advanced Transportation: Hyperloop-like systems, supersonic travel, and autonomous flying vehicles might redefine how we commute.
8. Virtual Reality (VR) and Augmented Reality (AR): Immersive VR and AR technologies could revolutionize entertainment, education, and remote work.
9. Brain-Computer Interfaces (BCIs): Direct connections between the brain and computers could enable new ways of communication and control.
10. Advanced Robotics: Robots with human-like dexterity and AI-driven decision-making capabilities could perform a wide range of tasks.
11. Clean Water Technologies: Innovative water purification and desalination methods to address growing water scarcity issues.
12. Advanced Healthcare: Personalized medicine, organ regeneration, and nanorobotics for medical treatments.
13. 3D Printing: Advanced 3D printing techniques could be used to create everything from food to complex structures.
14. Self-sustaining Cities: Smart cities with integrated renewable energy, waste recycling, and sustainable infrastructure.
15. Climate Engineering: Technologies to actively mitigate climate change, such as carbon capture and geoengineering.
16. Advanced Materials: Development of super-strong and lightweight materials for construction and manufacturing.
17. Advanced Agriculture: Vertical farming, precision agriculture, and genetically modified crops to address food security.
18. Privacy and Security Tech: Enhanced cybersecurity measures and privacy protection technologies.
19. Advanced Education: AI-driven personalized learning, virtual classrooms, and new forms of education delivery.
20. Mind Uploading: Speculative technology that could allow the transfer of human consciousness into digital or artificial substrates.

It’s important to note that the development and adoption of these technologies will depend on various factors, including ethical considerations, regulatory frameworks, and societal acceptance. Additionally, unforeseen breakthroughs and challenges may shape the technological landscape of 2090 in ways that are difficult to predict accurately.