What are some alternatives?
When comparing Lingoes and Dictionary.com, you can also consider the following products
GoldenDict - The program has the following features: Use of WebKit for an accurate articles' representation, complete with all formatting, colors, images and links.
Google - Google Search, also referred to as Google Web Search or simply Google, is a web search engine developed by Google. It is the most used search engine on the World Wide Web
Linguee - English Dictionary and Translation Search with 1,000,000,000 example sentences from human translators. Languages: English, German, French, Spanish, and Portuguese
Wiktionary - Open Source wiki-dictionary by the Wikimedia foundation
QuestSoft QTranslate - QTranslate is a free translator for Windows.
Microsoft Translator - Microsoft Translator is your door to a wider world.