It's similar to a search engine and you just search up a topic and it will bring up topics and discussions that mentioned the item you searched. The website is carefully monitored so not to have completely unreliable information. It also has courses (some which can be listened to by audio).
Wolfram|Alpha is more than a search engine. It gives you access to the world's facts and data and calculates answers across a range of topics, including science, nutrition, history, geography, engineering, mathematics, linguistics, sports, finance, music...
Wolfram Alpha is especially useful for the maths and sciences because of its ability to do computations, graph, and as a source of reliable information.
Wylio is an image search engine that helps bloggers and others alike search for quick and easy-to-use images under the creative commons licence. It also make citing a breeze by giving the image code to you with the attribution built in.
The websites that you link to from Google can allow you to link to websites that help you learn in all subjects. This website is a search engine that allows you to link to a large amount of websites on the internet.
A search engine where students can look up a particular topic and instaGrok will create a visual concept map that allows the student to explore the topic in greater detail.
Gooru is a tool that provides teachers and students with reliable educational resources in the contents areas of Math, Science, Social Studies, and English. Some of the resources provided by this website include videos, quizzes, documents, and other interactive media.
An image search engine that locates the source image from a user-uploaded file or URL. Useful for finding higher quality images, images from a cropped photo, and images without watermarks.
Symbolab is practically like Google, except it is geared specifically towards math and science students. Instead of using words in a search engine, you can use mathematical and scientific symbols. An included feature in the website is a step-by-step solution of an entered math problem.
Visual bookmark website that adds customization to websites in the form of icons. Multiple pages to create specific bookmarks such as websites for a specific class. Integrated search engine, encyclopedia, and other useful tools.