University scholars commonly use IAST in publications that cite textual material in Sanskrit, Pāḷi and other classical Indian languages.
IAST is also used for major e-text repositories such as SARIT, Muktabodha, GRETIL, and sanskritdocuments.org.
The IAST scheme represents more than a century of scholarly usage in books and journals on classical Indian studies. By contrast, the ISO 15919 standard for transliterating Indic scripts emerged in 2001 from the standards and library worlds; it includes solutions to problems such as representing Old Indo-Aryan and New Indo-Aryan languages side by side in library catalogues, etc. For the most part, ISO 15919 follows the IAST scheme, departing from it only in minor ways (e.g., ṃ/ṁ and ṛ/r̥)—see comparison below.
The Indian National Library at Kolkata romanization, intended for the romanization of all Indic scripts, is an extension of IAST.