Treegle Dictionary is described as 'new kind of dictionary that arranges definitions in a tree format. With this format, you can see how each component of a definition contributes to the meaning of a word' and is an website in the Education & Reference category. There are more than 10 alternatives to Treegle Dictionary, not only websites but also apps for a variety of platforms, including Android, iPhone, Windows and Mac. The best alternative is GoldenDict, which is both free and Open Source. Other great sites and apps similar to Treegle Dictionary are Wiktionary (Free, Open Source), WordReference (Freemium), Dictionary.com (Free) and Merriam-Webster (Free).
Wordnik is an 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.
Dictionary .NET is a tiny, easy and smart multilingual dictionary translating from/to 65 languages using Googles and Bing services. Integrates Google and Bing Dictionary, Translate, Search, Suggest (4-in-1) without installing and loading anything.
The meaning and definition of 140.000+ words. Meaning Monkey is a free online dictionary. Can't find something? Take part in the enlargement of MeaningMonkey.org! Let's build the world's next favorite dictionary together.