What are some alternatives?
When comparing Eko and The Online Slang Dictionary, you can also consider the following products
ECG for Apple Watch - ECG app and irregular heart rhythm notification
Dictionary.com - Dictionary.com is the world’s leading digital dictionary. We provide millions of English definitions, spellings, audio pronunciations, example sentences, and word origins.
Slang-Dictionary.org - Slang-Dictionary is a web-based database for searching through the database of slang words and learn how different words are getting different meanings in different countries of the world.
Lingoes - Lingoes is an easy and intuitive dictionary and text translation software.
Urban Dictionary - Urban Dictionary is a Web-based dictionary of slang words and phrases.
SlangSite.com - SlangSite.