2. Eng-Tips.com -- Intelligent work forums for engineering professionals.
3. AllAboutCircuits.com -- A series of online textbooks covering electricity and electronics.
4. CircuitLab.com -- Schematics and simulations.
5. EEVblog.com -- An off-the-cuff video blog for electronics engineers.
6. AeroStudents.com -- A website meant to help aerospace engineering students with their studies.
7. LearnChemE.com -- Educational resources for chemical engineering.
8. CFD-Online.com -- Online center for computational fluid dynamics.
9. MatWeb.com -- A searchable database of material properties.
10. Gridzzly.com -- Make your own grid paper.
11. Paul’s Online Math Notes -- Online math tutorials and notes.
12. MathInsight.org -- Learn the concepts in mathematics.
13. WolframAlpha.com -- Calculate anything.
14. PatrickJMT.com -- Free and useful math videos.
15. KhanAcademy.org -- Math videos and so much more.
