Physics Forums Competitors

Reddit aspires to be the heart of the internet, where 57+ million people engage, discover, comment, share, and vote in more than 100,000 communities. From breaking news, to fandoms, lifehacks, gaming, sports, health, and the internet’s cutest animals, Reddit is where people gather for conversations about the things they care about. Interested in advertising on Reddit? Create an account at https://www.business.reddit.com/ Talk to our Sales team: https://www.business.reddit.com/speak-with-a-reddit-ads-expert

Coursera was launched in 2012 by Andrew Ng and Daphne Koller with a mission to provide universal access to world-class learning. Today, it is one of the largest online learning platforms in the world, with 197 million registered learners as of December 31, 2025. Coursera partners with over 375 leading university and industry partners to offer a broad catalog of content and credentials, including courses, Specializations, Professional Certificates, and degrees. Coursera’s platform innovations — including generative AI-powered features like Coach, Role Play, and Course Builder, and role-based solutions like Skills Tracks — enable instructors, partners, and companies to deliver scalable, personalized, and verified learning. Institutions worldwide rely on Coursera to upskill and reskill their employees, students, and citizens in high-demand fields such as GenAI, data science, technology, and business, while learners globally turn to Coursera to master the skills they need to advance their careers. Coursera is a Delaware public benefit corporation and a B Corp.

Brilliant helps people learn quantitative and technical skills, especially in math, data, and computer science / AI. On Brilliant, you’re learning by doing – there are no videos, and everything is interactive. Our courses are a delightful experience of guided discovery, designed to improve your ability to think and reason from first principles.