Resources

Dictionaries

Sanskrit to English: http://www.aa.tufs.ac.jp/~tjun/sktdic/

Input and output are based on the transliteration scheme provided on the search page.
Meanings of roots with prefixes are listed along with the prefix, not under the root alone, e.g. आ-गम् will be listed under 'aagam', not under 'gam'.

English to Sanskrit: http://www.sanskrit-lexicon.uni-koeln.de/aequery/index.html

Conversational Words/Phrases: http://www.spokensanskrit.org/

Input and output can be in either Devanāgarī, Roman transliteration, or the site's transliteration scheme.
Useful for searching conversational phrases.

Look up Sanskrit words in several dictionaries and references
Download dictionary files here, install in application by selecting Edit > Dictionaries > Add (locate folder) and check off "Recursive"

Noun Declension and Verb Conjugation: http://sanskrit.inria.fr/DICO/grammar.html

Input and output can be in several scripts and schemes (default transliteration scheme here)
Noun Declension: input noun stem (i.e. as listed in a vocabulary list or dictionary), output is a declension table.
Notes: If output is selected as 'Devanagari', case names will be in Sanskrit (प्रथमा, etc.).
If output is selected as 'Roman', case names will be in English (Nominative, etc.), note that 'Vocative' appears after 'Nominative'.
Verb Conjugation: input verbal root and class, output is several conjugation tables and other verb forms.
Notes: If output is selected as 'Devanagari', tense/mood names will be according to traditional grammar (लट्, etc.).
If output is selected as 'Roman', tense/mood names will be in English (Present, etc.).

Root/Stem Lookup: http://sanskrit.inria.fr/DICO/index.fr.html#stemmer

Input and output can be in several scripts and schemes (default transliteration scheme here)
Scroll to "Search for atomic inflected forms" at the bottom of the page
Enter inflected form (i.e. noun with case/number ending, verb with tense/person/number ending, etc.) and select appropriate word type (i.e. noun, verb, etc.)

Sandhi Formation: http://sanskrit.inria.fr/DICO/sandhi.fr.html

Input is in several scripts or schemes, output is in Devanāgarī and Roman transliteration (default transliteration scheme here)
Select 'External' for sandhi between two words, select 'Internal' for sandhi within a word (i.e. between a stem and a prefix or suffix)

Sandhi 'Breaking': http://sanskrit.inria.fr/DICO/reader.fr.html

Input is in several scripts or schemes, output is in Devanāgarī and Roman transliteration (default transliteration scheme here)
Select text input as 'Sentence' and 'Sandhied'
Click 'Read' to display possible arrangements of words
Note: a final visarga will be broken as 's'.

Sanskrit Primer App: iOS https://itunes.apple.com/us/app/sanskrit-primer/id377366312?mt=8, Android https://play.google.com/store/apps/details?id=com.sparshapps.sanskrit&hl=en

Useful summaries of basic grammar topics
Appendix contains tables of noun declension, verb conjugation, and common vocabulary
Note: tables contain singular, dual, and plural forms so will appear different from the initial tables in the textbook
Includes audio with accurate pronunciation

Amarahāsa: https://en.amarahasa.com

Learner-friendly Sanskrit books for a language acquisition-based approach to learning Sanskrit
Useful for learning or practicing comprehension

Transliteration Engine: http://www.learnsanskrit.org/tools/sanscript

Quickly convert Sanskrit text from one transliteration scheme to another, including Devanāgarī into IAST