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www.lexilogos.com/keyboard/sanskrit_devanagari.htm
Online Sanskrit keyboard to type the Devanagari characters.

Unicaode:

Devanagari Range: 0900–097F

Devanagari - Unicode Consortium

Devanagari. Range: 0900–097F. This file contains an excerpt from the character code tables and list of character names for. The Unicode Standard, Version 7.0.