Is there a sefer, a website, or an app with all the concepts in Shas? Halachic Concepts such as - "Women are exempt from time-bound commandments".

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    There is a sefer called Klalei hagemara 3 vol,but it's in Hebrew
    – sam
    Commented Feb 20, 2019 at 18:39
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    Is webshas.org useful?
    – rosends
    Commented Feb 20, 2019 at 18:44
  • Gr8!!! @Rosends
    – Moshe
    Commented Feb 20, 2019 at 19:06
  • Let me know what the Hebrew sefer is called. I can translate Hebrew lol. And, It's not my question @mbloch
    – Moshe
    Commented Feb 21, 2019 at 5:23
  • @Moshe you are right, the other is not your question. Regarding this one, I am still confused. Are you looking for a "readable book" which you can read from beginning to end to understand key talmudic concepts? Or a dictionary/encyclopedia reference-style book which you consult for specific questions?
    – mbloch
    Commented Feb 21, 2019 at 5:55

5 Answers 5


The multi-volume אנציקלופדיה תלמודית has many such, but is as yet incomplete. It's in Hebrew. I think I've heard that some volumes have been translated (or perhaps issued separately) in English.

  • We have See Chemed older than the encyclopedia
    – kouty
    Commented Feb 20, 2019 at 19:34
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    @kouty, good point! Please post an answer.
    – msh210
    Commented Feb 20, 2019 at 20:14
  • I'm not familiar with the sefer. I work with kesef nivhar. The best answer is encyclopedia as you wrote
    – kouty
    Commented Feb 20, 2019 at 20:30

Aspaklaria is very good and it's free.


  • Aspaklaria is an encyclopedia of aggadah, not halachah
    – wfb
    Commented Feb 22, 2019 at 16:10

Please take a look at HaMafteach, I think it fits the description you mentioned. It is in English.

From description of book:

HaMafteach locates for you every topic, saying, anecdote, maxim, parable, significant subject matter, law, Biblical exegesis, and Biblical and Talmudic personality mentioned in the Talmud. The English edition includes a transliteration of Hebrew and Aramaic words and phrases, and a new integrated glossary. Hamafteach is an invaluable sefer for Rebbeim, teachers, authors of seforim, researchers and scholars, as well as for anyone who wishes to swim in the yam shel Talmud.

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    Not sure this addresses his q,the Mafteach is basiscally a giant index of the gemara, it itself does not explain concepts
    – sam
    Commented Feb 20, 2019 at 18:42
  • There's a free HaMafteach app in the play store. But there isn't a section specifically for halachik entries, (or any other groups of concepts) so I don't think that's what the OP is looking for. But I may be wrong.
    – user6591
    Commented Feb 20, 2019 at 18:43
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    surely this includes 'all the concepts in Shas', no? @sam
    – Dr. Shmuel
    Commented Feb 20, 2019 at 18:44
  • halachic concepts was only a exampled qualifier
    – Dr. Shmuel
    Commented Feb 20, 2019 at 18:45

If you are looking for a "readable book" which you can read from beginning to end to understand key talmudic concepts (rather than a dictionary or encyclopedia), then R Adin Steinsaltz' Reference Guide to the Talmud

clearly and concisely explains the Talmud’s fundamental structure, concepts, terminology, assumptions, and inner logic; provides essential historical and biographical information; and includes appendixes, a key to abbreviations, and a comprehensive index.

Practically it describes talmudic methodology, terminology, hermeneutical principles and halakhic concepts (there are more than 100 pages of these in my edition). It covers "Women are exempt from time-bound commandments" both under "mitzvot" and "women" and they are cross-references in the index.


Kesef Nivchar brings the gemara and primary Rishonim arranged by concept, covering 160 concepts:

http://hebrewbooks.org/19582 (There are newer prints available.)

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