Description: Khan Academy is a free online learning platform that offers practice exercises, instructional videos, and personalized learning dashboard for K-12 and college level students. Subjects covered include math, science, economics, history, grammar, and more.
Type: software
Pricing: Free
Description: MongooseIM is an open source instant messaging and chat server. It is highly scalable and can handle millions of concurrent users. MongooseIM is built on Erlang/OTP for reliability and performance.
Type: software
Pricing: Open Source