What are some alternatives?
When comparing Protranslate and Dictionary.com, you can also consider the following products
OneSky - Full Stack Localization Solution
GoldenDict - The program has the following features: Use of WebKit for an accurate articles' representation, complete with all formatting, colors, images and links.
Crowdin - Localize your product in a seamless way
Lingoes - Lingoes is an easy and intuitive dictionary and text translation software.
Zanata - Homepage for Zanata translation software
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