I have created a new section for links, lots of links so made a search engine.

Engineering ToolBox

https://www.engineeringtoolbox.com
A useful resource offering tools, formulas, equations, and explanations for various engineering topics.

Digital History

https://www.digitalhistory.uh.edu
A primary source for exploring U.S. history, with print‐friendly content, classroom lessons, and quizzes on American history.

Cool Math Games

https://www.coolmathgames.com
Offers HTML and Flash games for children and young adults to make learning fun.

Class Central

https://www.classcentral.com
A great website for students looking for the best free online courses offered by universities worldwide.

Calculator Soup

https://www.calculatorsoup.com
An online calculator to compute mortgage, loan interest, tax, financial ratios, conversions, construction, math, trigonometry, algebra, geometry, fractions, statistics, physics, data and time, and more.

Bored Button

https://www.boredbutton.com
If you are feeling bored and want to pass some time, click the red button to be surprised with funny, interactive, and creative websites.

Auto Draw

https://www.autodraw.com
AutoDraw by Google is a great drawing tool that works on smartphones, tablets, and computers. It suggests shapes and drawings based on what you draw using machine learning to help you create visually pleasing drawings quickly.

ASCII Flow

https://asciiflow.com
ASCIIFlow is a web‐based application that lets you draw ASCII diagrams.

Aeon

https://aeon.co
Read highly informative articles by renowned professors, researchers, and experts on sciences, philosophy, history, arts, nature, and more. You’ll find these articles not only interesting but eye‐opening as well.