The best replacement for peep sight is kisser button.

The best alternatives to peep sight are rated as following:
★★★★★  kisser button
★★★★  ghost ring
★★★★  no peep sight
★★★  open sight
★  hindsight

Your alternative for peep sight is not listed? Suggest!
Speaking about peep sight, one probably shouldn't forget about bow.

Other search terms related to peep sight and their ratings are:
★★★★★ bow
★★★★ compound bow
★ recurve
You have in mind a companion for peep sight and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of peep sight in all years. Click on graph for more.
peep sight
kisser button
ghost ring