https://eu.lisaanmasry.org - free online dictionary, grammar and app, by Mike Green https://eu.lisaanmasry.org/grammar/introduction.html - Egyptian Arabic Grammar
Qamous.org - A Crowdsourced Dialectic Arabic Slang Dictionary.
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https://lingualism.com : see also in MultiLang.md
- https://lingualism.com/shop/arabic/egyptian-arabic/ - graded readers for Egyptian Arabic, with free audio and paid PDF files.
- https://lingualism.com/shop/arabic/egyptian-arabic/talk-like-an-egyptian/ - idiomatic expressions guidebook, specifically for Egyptian.
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Tuta-Tuta - online children books, by Riham Shendy: