Dictionaries, Encyclopedias & Digital Libraries

• Forvo Pronunciation Dictionary
  Listen to pronunciations of Tamil words by native speakers
• ABC of Tamil
  Includes the Tamil alphabet, pronunciation guides, grammar, and syntax in PDF format
• Tamil Language in Context: A Comprehensive Guide to Learning Tamil

Grammar

• Verbix
  Free online verb conjugation
• The Language Gulper
  Introduction to the basics of Tamil

Vocabulary

• Tamil Greetings and other Vocabulary

Reading & Writing

• UKIndia - Learn to Read Tamil
  Tamil alphabet
• Omniglot
  Tamil alphabet
• Tamilcube
  Multimedia lessons teaching the script and numbers
• Tamil Script Book

Listening & Speaking

• Radio Time
  List of Tamil speaking online radio stations

Online Course Materials

• Quick Online Learning
  Intoductory lessons, quizzes, and flashcards
• Learn101
  Introductory lessons in Tamil
• Web-Assisted Learning and Teaching of Tamil (UPenn)
  Free online Tamil lessons (elementary, intermediate, and advanced)
• iBiblio
  Learn Tamil through English; includes grammar lessons and practice materials

News & Media

• Tamilnet
  Online news about the Tamil world in English
• BBC News
  BBC online news in Tamil

Arts, Films & Music

• Raaga.com
  Tamil music and videos
• Tamil Grounds
  Film portal
• Tamil Library
  Collection of websites presenting Tamil literature and various arts