The best replacement for strobe is flash.

The best alternatives to strobe are rated as following:
★★★★★  flash
★★★★★  continuous lighting
★★★  led
★★★  continuous
★★★  monolight
★★  softbox
★  speedlight
★  sun and moon
★  speedlite
★  hot lights
★  hot light
★  beacon
★  speedlight power
★  continuous light
★  constant light
  handshake
  continuous lighting better
  tungsten lighting
  constant
  studio flash
  constant lighting
  video light
  lighting

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

Other search terms related to strobe and their ratings are:
★★★★★ horn
★★ sounder
★★ siren
★★ softbox
★★ beauty dish
★ buzzer
piezo
You have in mind a companion for strobe and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of strobe in all years. Click on graph for more.
strobe
flash
continuous lighting