Suggestions for backref
The following packages have something in common with the package backref. The packages are ordered in decreasing similarity.
- xr-hyper: Inter-document hyper-references
 - hyperref: Extensive support for hypertext in LaTeX
 - nameref: Make reference to section names, etc.
 - hyper: Hypertext cross referencing
 - hypernat: Allow hyperref and natbib to work together
 - hypdoc: Hyper extensions for doc.sty
 - morehype: Hypertext tools for use with LaTeX
 - breakurl: Line-breakable \url-like links in hyperref when compiling via dvips/ps2pdf
 - gmiflink: Simplify usage of \hypertarget and \hyperlink
 - uri: Hyperlinks for a wide range of URIs
 - doi: Create correct hyperlinks for DOI numbers
 - hypdvips: Hyperref extensions for use with dvips
 - bookmark: A new bookmark (outline) organization for hyperref
 - hrefhide: Suppress hyper links when printing
 - hypdestopt: Hyperref destination optimizer
 - aurl: Extends the hyperref package with a mechanism for hyperlinked URLs abbreviated with prefixes
 - footnotebackref: Back-references from footnotes
 - issuulinks: Produce external links instead of internal ones
 - pdfscreen: Support screen-based document design
 - hypbmsec: Hypertext bookmarks in sectioning commands
 - intopdf: Embed non-PDF files into PDF with hyperlink
 - hypcap: Adjusting the anchors of captions
 - memhfixc: Adjustment for using hyperref in memoir documents
 - linkedthm: Hyperlinked theorem–proof environments for LaTeX
 - rorlink: Create ROR symbols which links to the given ROR-IDs
 - 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
 - bibtopicprefix: Prefix references to bibliographies produced by bibtopic