Suggestions for splitindex
The following packages have something in common with the package splitindex. The packages are ordered in decreasing similarity.
- index: Extended index for LaTeX including multiple indexes
 - manyind: Provides support for many indexes
 - genindex: Alternative index series
 - multind: Multiple indexes in LaTeX documents
 - multi-sudoku: Create and customise Sudoku grids of various sizes
 - gindex: Formatting indexes
 - bibunits: Multiple bibliographies in one document
 - bibtopic: Include multiple bibliographies in a document
 - chapterbib: Multiple bibliographies in a document
 - multibib: Multiple bibliographies within one document
 - multibbl: Multiple bibliographies
 - rcs-multi: Typeset RCS version control in multiple-file documents
 - svn-multi: Subversion keywords in multi-file LaTeX documents
 - bibtopicprefix: Prefix references to bibliographies produced by bibtopic
 - imakeidx: A package for producing multiple indexes
 - idxlayout: Configurable index layout, responsive to KOMA-Script and memoir
 - varindex: Luxury frontend to the \index command
 - seealso: Improve the performance of \see macros with makeindex
 - robustindex: Create index with pagerefs
 - repeatindex: Repeat items in an index after a page or column break
 - keyindex: Index entries by key lookup
 - idxcmds: Semantic commands for adding formatted index entries
 - indextools: Producing multiple indices
 - hvindex: Support for indexing
 - indxcite: Generate author index based on citations
 - scrindex: Make index package work with Koma-script classes
 - ltxindex: A LaTeX package to typeset indices with GNU’s Texindex
 - testidx: Dummy text for testing index styles and indexing applications
 - esindex: Generate sorting keys for indexes
 - indextra: Enhanced index typesetting
 - corridx-latex: Correct index entries for chemical compounds