Description: Duolingo is a free language-learning platform that offers over 100 total courses across more than 30 languages. The bite-sized lessons make it easy to learn a new language through fun, quick activities on your phone, tablet, or computer.
Type: software
Pricing: Freemium
Description: ThingSpeak is an open-source Internet of Things (IoT) application and API to store and retrieve data from things using HTTP over the Internet or via a Local Area Network. It allows users to aggregate, visualize, and analyze live data streams in the cloud.
Type: software
Pricing: Open Source