• Baheth: classical Arabic dictionaries:
لسان العرب Lisān al-ʿarab (The tongue of the Arabs) by Ibn Manzūr (13th) (or scanned book)
القاموس المحيط Al-qāmūs al-muḥīṭ (The surrounding ocean) by Al-Firuzabadi (14th) (or scanned book)
• Reverso: Arabic-English dictionary & words in context
• Lisaan Masry: Egyptian Arabic-English (Arabic & Latin alphabet)
• Systran: Arabic-English translation, text & web page
→ online translation: Arabic-English & other languages & web page
• Goethe-Verlag: Arabic-English usual expressions & illustrated vocabulary (+ audio)
• Bilingual visual dictionary Arabic-English (2009)
• Arabic English thematic lexicon by Daniel Newman (2007)
• Oxford-Duden pictorial English dictionary by Moustafa Gabr (2003)
• Glossary of islamic terms by Anwer Mahmoud Zanaty (2006)
• Dictionary of modern written Arabic, Arabic-English, by Hans Wehr (1976)
• Al-Mawrid, Modern Arabic-English dictionary, by Rohi Baalbaki, Lebanon (1995)
• Arabic-English dictionary by William Thomson Wortabet, John Wortabet, Harvey Porter (1984)
• Arabic vocabulary, by topics
• Wikipedia: Arabic loanwords in English
• Etymological dictionary of Arabic by the University of Oslo (in Latin characters) 
• Arabic etymological dictionary by András Rajki (2005) (in Latin characters)
• American Heritage dictionary: Semitic roots
• The Turkish contribution to the Arabic lexicon by Stephan Procházka (2005)
• Iranian loanwords in Arabic in Encylopædia Iranica
• Defense Language Institute civil & military vocabulary (+ audio)
• Arabic-English Lexicon by Edward William Lane (1863)
or scanned books: ا - ث - ج - خ - د - ز - س - ص - ض - ع - غ - ف - ق - م - ن - ي
• Arabic-English vocabulary for the use of English students of modern Egyptian Arabic, compiled by Donald Cameron (1892)
• Arabic-English vocabulary of the colloquial Arabic of Egypt, containing the vernacular idioms and expressions, slang phrases, etc… used by the native Egyptians, compiled by Socrates Spiro (1895)
• English-Arabic vocabulary for the use of officials in the Anglo-Egyptian Sudan, by Captain Harold Amery (1905)
• Verbal idioms of Quʾrān by Mustansir Mir (1989)
• The foreign vocabulary of the Quʾrān by Arthur Jeffrey (1938)
• Dictionary and glossary of the Koran by John Penrice (1873)
• Lexicon arabico-latinum: Arabic-Latin dictionary by Georg Wilhelm Freytag (1835) : I-II & III-IV
• Arabic and Latin anatomical terminology chiefly from the Middle Ages, by Adolf Fonahn (1922)
• Die aramäischen Fremdwörter im Arabischen: Aramaic loanwords in Arabic, by Siegmund Fraenkel (1886)
• Arabic proverbs or The manners and customs of the modern Egyptians, translated by and explained John Lewis Burckhardt (1875)
• Arabum proverbia, vocalibus instruxit, latine vertit, commentario illustravit: Arabic proverbs translated and commented in Latin, by Georg Wilhelm Freytag (1838)
• Hebrew loanwords (Modern period), by Roni Henkin, in Encyclopedia of Hebrew language and linguistics (2013)
• Arabic influence (on Modern Hebrew)
→ Arabic keyboard to type a text with the Arabic script
→ Transliterated Arabic keyboard to type a text with the latin script
• Arabic-studio: Arabic alphabet, pronunciation (video)
• Fun with arabic: Arabic alphabet & vocabulary (+ audio)
• Acon: verb conjugation
• Speak7: basic Arabic grammar
• Arabic-online: Arabic grammar
• Looklex : cours d'arabe, vocabulaire (+ audio)
• Madinah-Arabic: Arabic course, pronunciation & phrases (+ audio)
• Modern Written Arabic, Foreign service institute (1969) (+ audio)
• Saudi Arabic basic course, Urban Hijazi dialect, by Margaret Omar (1975) (+ audio)
• Levantine Arabic, introduction to pronunciation, by James Snow (1971) (+ audio)
• From Eastern to Western Arabic by Margaret Omar (1974)
• Levantine and Egyptian Arabic, comparative study, by Margaret Omar (1976)
• Almadrasa: Arabic course (in Spanish)
• A reference grammar of modern standard Arabic by Karin Ryding (2005)
• Arabic verbs and essentials of grammar (2008)
• Elementary modern standard Arabic (1999)
• Learn Arabic the fast and fun way (2009)
• Arabic made easy by Abul Hashim (1992)
• Learning Arabic, language of the Quʾrān, by Izaath Uroosa (2009)
• Arabic grammar of the written language by John Haywood (1965)
• Gramática árabe: Arabic grammar, by Federico Corriente (2002)
• The structure of Arabic language and orthography by Elinor Saiegh & Roni Henkin, in Handbook of Arabic literacy (2014)
• Arabic language (Arabic and Persian languages in contact) in Encylopædia Iranica
• Arabic lexicography, its history and its place in the general history of lexicography, by John Haywood (1960)
• The phonetics of Arabic by William Henry Temple Gairdner (1925)
• Arabic simplified, practical grammar of written Arabic in 200 lessons, by Arthur Upson (1921)
• Arabic grammar of the written language by Griffithes Wheeler Thatcher (1922)
• Elementary Arabic, grammar by Frederic du Pre Thornton, abridgement of Wright's Arabic grammar (1919): I & II - III - IV
• Grammar of the Arabic language by Carl Paul Caspari, translated by William Wright (1896): I & II
• Arabic grammar, paradigms, literature, exercises and glossary, by Albert Socin (1895)
• Practical grammar of the Arabic language & dialogues, vocabulary, by Faris Ash-Shidyâq (1891)
• The Arabic manual by Edward Henry Palmer (1885)
• A grammar of the Arabic language (1874)
• The spoken Arabic of Egypt, grammar, exercises, vocabularies, by John Selden Willmore (1905)
• Egyptian self-taught (Arabic): alphabet and pronunciation, vocabularies, elementary grammar, idiomatic phrases & conversations, by Carl Thimm (1914)
• Arabic manual, Colloquial handbook in the Syrian dialect, & simplified grammar, English and Arabic vocabulary and dialogues, by Francis Edward Crow (1901) (with Latin characters)
• Principles of general grammar by Antoine Silvestre de Sacy (1837)
• books & papers about the Arabic language: Google books | Internet archive | Academia | Wikipedia
• Al Jazira الجزيرة (in Arabic and in English)
• An Nahar جريدة النهار Lebanese newspaper
• History of Arabic literature by Clément Huart (1903)
• Arabic reader by Chaim Rabin (1947)
• An aid to practical written Arabic: texts & vocabulary, by John van Ess (1920)
• Arabic reading lessons consisting of easy extracts from the best authors & vocabulary, by Duncan Forbes (1864)
→ the Quran in Arabic, English & other languages
→ the Bible in Arabic & bilingual Arabic-English & other languages
• Universal Declaration of Human Rights الإعلان العالمي لحقوق الإنسان translation in Arabic (+ audio)
→ First article in different languages
→ Universal Declaration of Human Rights in Arabic, English & other languages
→ Maltese: a semitic language
→ Arabic alphabet & calligraphy
→ Arabic countries & civilization