Cindex

Cindex is software, developed by Indexing Research, for creating indexes to books, newspapers and other periodical publications.

File Identification

 * Cindex for DOS index files. *.NDX
 * Cindex versions 1-2. *.CDX
 * Cindex versions 3-4. *.UCDX
 * Cindex templates have identical structure but have extensions *.TPL, *.UTPL

Links

 * Indexing Research website
 * Wikipedia Indexing Software