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: Libib.com is an online service for managing bibliographies and references. It allows users to easily store, organize, and cite their sources for research papers and projects.
Type: software