The need for a simple encoding scheme that used only keys available on an ordinary keyboard was felt in the early days of the RMIM newsgroup where lyrics and trivia about Indian popular movie songs was being discussed. In parallel was a Sanskrit Mailing list that quickly felt the need of an exact and unambiguous encoding. ITRANS emerged on the RMIM newsgroup as early as 1994. This was spearheaded by Avinash Chopde,who developed a transliteration package. Its latest version is v5.34.The package also enables automatic  conversion of the Roman script to the Indic version.
ITRANS was in use for the encoding of Indian etexts - it is wider in scope than the Harvard-Kyoto scheme for Devanagari transliteration, with which it coincides largely, but not entirely. The early Sanskrit mailing list of the early 1990s, almost same time as RMIM, developed into the full blown Sanskrit Documents project and now uses ITRANS extensively, with thousands of encoded texts. With the wider implementation of Unicode, the traditional IAST is used increasingly also for electronic texts.
ITRANS transliteration scheme
ITRANS transliteration scheme is given in the tables below.The ITRANS method is without using diacritics, as compared to other transliteration methods. While using ITRANS, for proper nouns, first letter capitalization is not possible since, ITRANS uses both capital and small letters in its lettering scheme.
|अं(added as anusvāra)||ਂ/ ੰ||అం||ಅಂ||M/N/.m|
|ऽ(avagraha:elision during sandhi)||.a|
|Om symbol||OM, AUM|
The Devanāgarī consonant letters include an implicit 'a' sound. In all of the transliteration systems, that 'a' sound must be represented explicitly.
Irregular consonant clusters
Consonants with Nuqta
- Indic transliteration on computers - brief history
- ITRANS Official site
- HiTrans - Online ITRANS to Unicode converter with scheme extensions
- Online Interface to ITRANS- ITRANS to Unicode UTF8 (Converter tool from Latin script using ITRANS to various Indic scripts)
- View Unicode Hindi through Roman transliteration (ITRNS scheme)
- Downloadable ITRANS to Unicode transformer A simple Java applet demo, with source code. Uses a simple table based extendable algorithm.
- Xlit: Transliteration system for Indian Languages Online and Integrable solution by CDAC Mumbai
- Google Transliteration (supports Indic Languages) Online and downloadable tool for transliteration by Google. (Also additionally uses ITRANS but older version 1)
- Itranslator 2003 as a freeware from Onkarananda Ashram Himalayas
- Lipika IME available for Mac OS X
- Indian Language Transliteration for all users and programmers - Transliterates Bengali, Hindi, Kannada, Malayalam, Punjabi, Sanskrit, Tamil and Telugu.
- "An early post from 1995 referring to ITRANS effort going on RMIM newsgroup". Retrieved 15 December 2015.
- Aksharamukha transliteration tool. Akshara Mukha is an Asian script (two way) converter freeware. It converts between 20 different South Asian & East Asian scripts. It also supports 5 major Latin transliteration conventions such as IAST, ISO, Harvard Kyoto, ITRANS & Velthuis. You can access the project from here. While using the tool, 'source' can be set to for example: ITRANS or Harvard-Kyoto, and 'target' can be set to a particular script like Devanagari-Hindi.(When you are using a north Indian script, tick the box: Remove ‘a’.) It can work in reverse too, for example from Hindi to Latin by ISO transliteration.
- "ITRANS (version 5.34) website describing scheme. (Avinash Chopde)". www.aczoom.com. Retrieved 2015-12-15. Online Interface to ITRANS (Online converter tool from Latin script using ITRANS to various Indic scripts. Reliable source at converter tool page gives the mapping spreadsheet (has clear tilde sign). Scheme for Devanagari and tables for all the languages covered. Ultimately the conversion tool follows the mapping spreadsheet. Source code at GitHub itrans
- Google Transliteration (supports Indic languages) Online and downloadable tool for transliteration by Google. (Also additionally uses ITRANS but older version 1)