Dictionary.com is described as 'The free Dictionary.com app delivers content from Dictionary.com and Thesaurus.com, including nearly a million words and definitions and 90,000 synonyms and antonyms. No internet required!' and is a popular Dictionary in the education & reference category. There are more than 100 alternatives to Dictionary.com for a variety of platforms, including Web-based, Android, Windows, iPhone and iPad apps. The best Dictionary.com alternative is GoldenDict, which is both free and Open Source. Other great apps like Dictionary.com are Wiktionary, WordReference, Tatoeba and Merriam-Webster.