Full list of the features:

1. Transliteration of Arabic/Syriac text, vocalized or not, to Hebrew writing system (read more).
   
2. Translation of the text with various online dictionaries and translation services. Some stemming can be performed by the Add-On if a word is not found in a dictionary. There is support for Ar>En, He, Ru ; He>Ar, En, Ru ; West European Languages>Ru ; Syr>En, Fr ; Aram>He ; Persian>En ; Yiddish>En ; Ru>West European Languages , Ar, En dictionaries. Google Translate is used to translate text blocks or when a dictionary translation is not available. Also the Add-On utilizes Wikipedia's "see in another language" links to translate available terms.
   
3. Articles from various encyclopedias and other related sources.
   
4. Etymological information.
   
5. Unicode info on each character of the selected text.
   
6. Ge'ez number converter.
   

   Aramaic and Arabic languages are close relatives of Hebrew, and transliteration to Hebrew writing system makes many words recognizable for a Hebrew speaker. The transliteration model is made to make the Arabic words easy recognizable for a Hebrew reader (the pronunciation is given according to the literary Arabic pronunciation) .
   In the Hebrew, letters בגדכפת have (or had) two variants of pronunciation : plosive and fricative. Dagesh Qal is used to denote a plosive variant. Lesser known upperscore line -- Rafe, may be used to denote a fricative one. The converter uses both these signs. Also, it uses geresh sign to mark a letter with a different from the Hebrew pronunciation if both the letter pronunciation variants are plosive or fricative (the converter, where it is possible, does not use the modern Hebrew geresh based Arabic transliteration). While in the modern Israeli Hebrew only כ and פ still have each two pronunciations, in the Liturgical Mizrahi Hebrew all בכפת letters have two pronunciations (גד have each two pronunciations in the Yemeni Hebrew ), and this converter uses Liturgical Mizrahi/Yemeni Hebrew בגדכפת pronunciation to reflect specific Arabic sounds in the transliterated text.
   In Arabic, פ/ف always sounds as F, ב/ب is always B, and כ/ك always denotes K, but د ط ح ص ت (equivalents of דטחצת), like Hebrew בגדכפת, denote each two sounds where a variant with a pronunciation different from a basic Hebrew/Aramaic pronunciation, ordinarily a fricative one, is marked with an additional dot (that mostly acts like a raffe). While ح denotes the same sound as Mizrahi Hebrew ח , خ denotes the same sound as כֿ , and it were phonetically consistent to map خ as כֿ (and early versions of the converter used this mapping). But the problem is that خ is linked etymologically not with כֿ but with ח (it is thought that there were two sounds in Proto-Semitic, and still exist in Arabic, those joined in one Hebrew sound/letter), and recent version of the converter maps خ to ח׳. Contrary, it is thought that one Arabic/Proto-Semitic sound ك corresponds with two distinct Hebrew sounds. With the Dagesh (and w/o Rafe) דכת ,in transliterated text, denote the same sounds as in modern Israeli Hebrew (ט denotes an Arabic/Mizrahi Hebrew [tˤ] ), but צּ denotes a specific consonant ض DAD that is the plosive variation of the tsade, but sounds closer to D (while a Hebrew צ always denotes an affricative). For example, أرض -- Arabic word meaning "earth" , written with DAD, will be transliterated as ארץּ and, therefore, is easy recognizable. With the Rafe (and w/o Dagesh) דטת letters, according to the description, denote:

דֿֿ/ذ	sound like "th" of the English word "this"
טֿ/ظ	sound like "th" of the English word "thus"
תֿ/ﺙ	sounds like "th" of the English word "thin"

   The letter غ GHAYN denotes an ר-like sound, voiced uvular fricative. Many ashkenazi Jews pronounce ר by this way. It were phonetically consistent to transliterate it as רֿ, but the converter maps it to עֿ, because غ is linked etymologically with ע and not with ר. In the converted Syriac text GHAYN ordinarily will be mapped to גֿ , for example, in the word בגֿדד ( a special dot "רוככא" is used in the original text to mark a "soft" letter ) .
   The letter ر\ר denotes itself, in Arabic, a trill sound close to the Amharic/Russian R. This sound is very difficult for most ashkenazi jews to pronounce, and local helpers of nazis in the Eastern Europe used a russian word "KUKURUZA"/"кукуруза" as a shibboleth to recognize jews for the extermination.

    The letter and the diacritic sign ء HAMZA denotes a glottal stop while alif w/o HAMZA denotes mostly a long /a:/ vowel. In the Hebrew, א denotes a mandatory glottal stop when the alef has a shva niqqud אְ, or when the letter just before the alef has a shva . The converter treats HAMZA as a mandatory stop, and puts alef with shva there, but omits the leading אְ. For example إِسْرَائِيل will be transliterated as אִסְרָאְיִיל .

    ى ʾalif maqṣūrah (ألف مقصورة) denotes a shot /a/ at the end of a word, it looks like a dotless ـي , the converter renders it as "ַא" . A problem is that Egyptians ordinary omit the dots in ـي , the converter can not process such ـي properly and renders ַַא in place of the proper י

    The shva in the converted Arabic text should never be pronounced, as sukun (سكون) it denotes absence of vowel. Kamatz denotes long /a:/ in the converted Arabic and Eastern Syriac texts, but /o/ in the converted Western Syriac.

    Best Regards,
    Ze'ev (Vladimir) Belkin

•  History of the Ancient and Modern Hebrew Language By David Steinberg
•  Biblical Hebrew Poetry and Word Play Reconstructing the Original Oral[1], Aural[2] and Visual Experience By David Steinberg

•  http://www.bethmardutho.org/ -- info on Syriac, Syriac fonts and keyboard.
•  Compendious Syriac grammar By Theodor Nöldeke
•  http://maskani.lugovsa.net/node/190 -- (Russian) учебник арамейского языка.

•   ספה ערבית בויקיפדיה העברית
•  http://tanzil.net/-- Qur'an recitation online.
•  http://www.ar-ru.ru/ -- (Russian) арабский алфавит, грамматика, словарь Баранова в электронной форме, книги, другая интересная и полезная информация.
•  http://nuruliman.ru/ -- (Russian) аналогичный сайт, хозяин ведёт видеокурс арабского языка на youtube.

•  Ge'ez Numerals
•  http://www.abyssiniacybergateway.net

•  Text Research Tools for Firefox.