On the Internet

Online dictionaries (free): 

• Merriam-Webster’s Learner’s Dictionary
• Longman Dictionary of Contemporary English
• Internet Picture Dictionary
• WordReference.com–Free online Oxford dictionaries--Spanish, French, Italian, German and more. 
• Word Anywhere–Hindi English and Other Indian Languages Dictionary
• MDBG free online Chinese-English dictionary
• Denshi Jisho–online Japanese dictionary
• Google translate

Mobile dictionary apps (free):

• WordReference.com--http://www.wrmob.com
• Dictionary.com--http://dictionary.reference.com/mobileapp
• TheFreeDictionary.com--http://www.thefreedictionary.com/download.htm

Search engines in other languages:

• Yamli (Arabic)
• Guruji (Hindi)
• Baidu (Simplified Chinese)
• Yam (Traditional Chinese)
• Yandex  (Russian)

Other resources:

• Get cool 3D & animated world flags for free at 3dflags.com.
• Additional information of the languages of the world at Wikipedia.
• Get quick facts of each country in CIA’s “The World Factbook”