The best replacement for endnotes is footnotes.

The best alternatives to endnotes are rated as following:
★★★★★  footnotes
★★★★  bibliography
★★  works cited
★  references
★  footnotes chicago style
★  footnotes chicago
★  endnotes
★  bibliography first
★  bibliography chicago
  footnotes turabian
  foot notes
  footnote
  reference manager

Your alternative for endnotes is not listed? Suggest!
Speaking about endnotes, one probably shouldn't forget about bibliography.

Other search terms related to endnotes and their ratings are:
★★★★★ bibliography
★ mla
chicago style
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endnotes
footnotes
bibliography