The Best Online Technology Books for Developers

1. "Design Patterns: Elements of Reusable Object-Oriented Software" by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides

2. "Clean Code: A Handbook of Agile Software Craftsmanship" by Robert C. Martin

3. "The Pragmatic Programmer: From Journeyman to Master" by Andrew Hunt and David Thomas

4. "Introduction to the Theory of Computation" by Michael Sipser

5. "Code Complete: A Practical Handbook of Software Construction" by Steve McConnell

6. "Refactoring: Improving the Design of Existing Code" by Martin Fowler

7. "Cracking the Coding Interview: 150 Programming Questions and Solutions" by Gayle Laakmann McDowell

8. "The Linux Command Line: A Complete Introduction" by William E. Shotts Jr.

9. "The Algorithm Design Manual" by Steven Skiena