The best replacement for rebase is merge git.

The best alternatives to rebase are rated as following:
★★★★★  merge git
★★★★  pull
★★★  reset
★★★  merge github
★★  cherry pick
★★  merge hg
★  merge
★  reline
  reline dentures

Your alternative for rebase is not listed? Suggest!
Speaking about rebase, one probably shouldn't forget about merge commits.

Other search terms related to rebase and their ratings are:
★★★★★ merge commits
★★★ tortoisegit
You have in mind a companion for rebase and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of rebase in all years. Click on graph for more.
rebase
merge git
pull