Duolingo is a freemium language-learning platform that includes a language-learning website and app, as well as a digital language proficiency assessment exam. Duolingo offers all its language courses free of charge.
Spanish for Kids
Open Culture
Learn 48 Languages Online for Free: Spanish, Chinese, English & More.
BBC Languages
German
Guten Tag!
A lively introduction to the language in ten short parts. Watch and listen to the clips and have a look at the key language and transcripts if needed. The Talk German TV series from which these clips are taken, is repeated from time to time on BBC Learning Zone.
BBC Languages
French
Online lessons with audio, games, vocabulary, grammar explanations and exercises