Xindy was deceloped after an impasse had been encountered in the attempt to complete internationalisation of .

Xindy can be used to process indexes for documents marked up using (La)TeX, Nroff family and SGML-based languages. Xindy is highly configurable, both in markup terms and in terms of the collating order of the text being processed.

The authors are Roger Kehr and Joachim Schrod.