Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
Power Thesaurus - Power Thesaurus is a fast, comprehensive and easy-to-follow online thesaurus for writers...
GoldenDict - The program has the following features: Use of WebKit for an accurate articles' representation, complete with all formatting, colors, images and links.
English Grammar Complete Handbook - English Grammar Complete Handbook app offers features to help users in extensively learning English grammar by viewing the complete guide of all the grammatical terms and concepts at a glance.
Wiktionary - Open Source wiki-dictionary by the Wikimedia foundation
English Grammar Test - English Grammar Test app is an app by Sevenlynx that contains features to help users access a variety of online resources and books to learn by adopting a different way.