Wiktionary is a multilingual, web-based project to create a free content dictionary of all words in all languages. Developed by Wikimedia Foundation
License: Open Source
Wiktionary is a collaborative, user-generated dictionary that offers a broad range of definitions in multiple languages, while Apple Dictionary provides a polished, offline resource integrated into the Apple ecosystem with audio pronunciations and visual aids. Users looking for community-driven content and extensive languages may prefer Wiktionary, whereas those needing a reliable reference with offline access and multimedia features may favor Apple Dictionary.