American educational websites

Duolingo, Inc. is an American educational technology company that produces learning apps and provides language certification. Duolingo offers courses on 42 languages, ranging from English, French, and Spanish to less commonly studied languages such as Welsh, Irish, and Navajo, and even constructed languages such as Esperanto and Klingon. It also offers courses on music, math, and chess. The learning method incorporates gamification to motivate users with points, rewards and interactive lessons featuring spaced repetition. The app promotes short, daily lessons for consistent, phased practice.

global set of conferences

Coursera Inc. () is an American for-profit online university, earlier operating as a global massive open online course provider from 2012 until 2021. It was founded in 2012 by Stanford University computer science professors Andrew Ng and Daphne Koller. Coursera works with universities and other organizations to offer online courses, certifications, and degrees in a variety of subjects.

non-profit educational organization

MathWorld is an online mathematics reference work, created and largely written by Eric W. Weisstein. It is sponsored by and licensed to Wolfram Research, Inc. and was partially funded by the National Science Foundation's National Science Digital Library grant to the University of Illinois at Urbana–Champaign.

Codecademy is an American online interactive platform that offers free coding classes in 13 different programming languages including Python, Java, Go, JavaScript, Ruby, SQL, C++, C#, Lua, and Swift, as well as markup languages HTML and CSS. The site also offers a paid "Pro" option that gives users access to personalized learning plans, quizzes, and realistic projects.

edX LLC is an American for-profit massive open online course provider. It was founded by MIT and Harvard. It is a subsidiary of 2U.

Udemy ( ) is a US-based education technology company. Founded as a massive open online course (MOOC) provider in 2010 by Eren Bali, Gagan Biyani, and Oktay Caglar; the company is based in San Francisco, California, with offices in the United States, Australia, India, Ireland, Mexico and Turkey. Its education platform allows both the creation and sharing of online courses. By early 2025, Udemy claimed to have millions of individual users. Courses are typically video-based and on-demand.

thumb|Sebastian Thrun at Frankfurt Motor Show 2019

Edmodo was an educational technology platform for K–12 schools and teachers. Launched in 2008, it enabled teachers to share content, distribute quizzes and assignments, and manage communication with students, colleagues, and parents. The service was shut down on September 22, 2022.

web-based publication of MIT course content

Quizlet is a multi-national American education technology company that provides digital study tools, including flashcards, practice quizzes, and collaborative learning games. The service was founded in 2006 by Andrew Sutherland and released publicly in 2007.

freeCodeCamp (also referred to as Free Code Camp) is a non-profit educational organization that consists of an interactive learning web platform, an online community forum, chat rooms, online publications and local organizations that intend to make learning software development & computer programming accessible to anyone.

HowStuffWorks is an American commercial infotainment website founded by professor and author Marshall Brain, to provide its target audience an insight into the way many things work. The site uses various media to explain complex concepts, terminology, and mechanisms—including photographs, diagrams, videos, animations, and articles.

Erowid, also called Erowid Center, is a non-profit educational organization that provides information about psychoactive plants and chemicals.

Code.org is a non-profit organization and educational website founded by Hadi and Ali Partovi, aimed at K–12 students who specialize in computer science. The website includes free coding lessons and other resources. The initiative also targets schools in the United States in an attempt to encourage them to include more computer science classes in the curriculum. In 2013, they launched the Hour of Code across the United States to promote computer science during Computer Science Education Week.

American DIY magazine (2005-)

distance education organisation

Yanka Industries, Inc., doing business as MasterClass, is an American online education subscription platform on which students can access tutorials and lectures pre-recorded by experts in various fields. The concept for MasterClass was conceived by David Rogier and developed with Aaron Rasmussen.

LeetCode is an online platform for coding interview preparation. The platform provides coding and algorithmic problems intended for users to practice coding. LeetCode has gained popularity among job seekers in the software industry and coding enthusiasts as a resource for technical interviews and coding competitions. As of 2025, the website has 26.3 million monthly visitors.

Livemocha was an online language learning community based in Seattle, Washington. It provided instructional materials in 38 languages and a platform for speakers to interact with and help each other learn new languages. According to the site, it had approximately 12 million registered members from 196 countries around the globe. It was free to join and use; however, it offered the option to pay for various benefits. In 2012, 400,000 users visited the site daily.

American educational website (1999-2022)

thumb|Chegg headquarters in Santa Clara Chegg, Inc., is an American educational technology company based in Santa Clara, California. It provides homework help, digital and physical textbook rentals, textbooks, online tutoring, and other student services, powered by artificial intelligence. The company has 6.6 million subscribers. Chegg has been widely criticized for facilitating cheating and academic dishonesty among students.

educational website

CodeCombat is an educational video game for learning software programming concepts and languages. This game is recommended for students ages 9–16. Students learn to type coding languages like JavaScript, Python, HTML and CoffeeScript, as well as learning the fundamentals of computer science. CodeCombat has 11 units - three game development units, two web development units, and six computer science units. The first unit, Computer Science 1, is free to all students and teachers. In 2019, CodeCombat was recognized by the College Board as an endorsed provider of curriculum and professional develop

Instructables is a website specializing in user-created and uploaded do-it-yourself projects, currently owned by Autodesk. It was created by Eric Wilhelm and Saul Griffith and launched in August 2005. Instructables is dedicated to step-by-step collaboration among members to build a variety of projects. Users post instructions to their projects, usually accompanied by visual aids, and then interact through comment sections below each Instructable step as well in topic forums.

online education company

Educational media company

Codewars is an educational community for computer programming. On the platform, software developers train on programming challenges known as kata. These discrete programming exercises train a range of skills in a variety of programming languages, and are completed within an online integrated development environment. On Codewars the community and challenge progression is gamified, with users earning ranks and honor for completing kata, contributing kata, and quality solutions.