The best replacement for gutter is no gutter.

The best alternatives to gutter are rated as following:
★★★★★  no gutter
★★★  steel gutter
★★  french drain
★★  brooklyn bowl
★  vinyl gutter
★  wireway
★  eaves
★  leader
  metal gutter
  regular gutter
  no rain gutter

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

Other search terms related to gutter and their ratings are:
★★★★★ downspout
★★ chain
★★ fascia
★ drip edge
★ leaf blower
rain chain
You have in mind a companion for gutter and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of gutter in all years. Click on graph for more.
gutter
no gutter
steel gutter