Wordnik is described as 'Online English dictionary and language resource that provides dictionary and thesaurus content.Some of the content is based on print dictionaries such as the Century Dictionary, the American Heritage Dictionary, WordNet, and GCIDE' and is a Dictionary in the education & reference category. There are more than 25 alternatives to Wordnik, not only websites but also apps for a variety of platforms, including Android, iPhone, Linux and Mac apps. The best Wordnik alternative is GoldenDict, which is both free and Open Source. Other great sites and apps similar to Wordnik are Wiktionary, WordReference, Dictionary.com and Wordnote Dictionary.