Unilexicon is described as 'A visual editor and taxonomy manager for authoring controlled vocabularies with a content tagging extension' and is an website. There are three alternatives to Unilexicon, not only websites but also apps for Mac, Windows, Linux and iPad. The best Unilexicon alternative is Visual Understanding Environment, which is both free and Open Source. Other great sites and apps similar to Unilexicon are CmapTools and Protégé.
Visual Understanding Environment (VUE) is a mind-mapping and concept-mapping tool. It is also a non-linear presentation program.
Visual Understanding Environment is the most popular Windows, Mac & Linux alternative to Unilexicon.
Visual Understanding Environment is the most popular Open Source & free alternative to Unilexicon.
concept maps on servers, edit their maps synchronously (at the same time) with other users on the Internet, and search the web for information relevant to a concept map.
CmapTools is the most popular iPad alternative to Unilexicon.
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