Learning English

• BBC Learning English
• Learn English Online - British Council
• Breaking News English Free English News Lessons in 7 Levels
• Free Rice Play English vocabulary game while contributing rice to The United Nations World Food Programme.

Dictionaries

• Merriam-Webster Dictionary
• Oxford Learner's Dictionaries
• Cambridge Dictionary
• Collins Online Dictiona

Learning Esperanto

• Duolingo Course
• Kurso de Esperanto is a multimedia computer program for teaching yourself Esperanto.
• Esperanto in 12 days Esperanto course in multiple languages
• lernu! A multilingual site for learning the international language Esperanto
• Pasporto al la tuta mondo a series of videos to learn Esperanto

Learning French

• TV5 Monde Apprendre
• Lawless French French lessons and language tools from Laura K Lawless.