Online: use it on any computer, tablet or phone that has a web browser
application offering a comprehensive set of reference and learning tools
app that you can use wherever you are: no internet connection needed.
Apple: apps for iPhone and iPad
Kindle eBooks for dictionary, thesaurus and grammar
PDF: dictionary, thesaurus and grammar
Other useful stuff...
Learn arabic writing: An easy, online introduction to learning arabic writing
Grammar A comprehensive summary of Egyptian Arabic grammar
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