The best replacement for projectors is lcd.

The best alternatives to projectors are rated as following:
★★★★★  lcd
★★★  dlp projectors
★★★  televisions
★★  reflectors
★★  tvs
★★  lcd projectors
★★  flat screen tvs
★★  flat screens
★  big screen tv
★  hid lights
  hid projectors
  dlp
  monitors

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

Other search terms related to projectors and their ratings are:
★★★★★ bulbs
★★★★ rainbow effect
★★★ hid
★ document cameras
★ 3d
You have in mind a companion for projectors and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of projectors in all years. Click on graph for more.
projectors
lcd
dlp projectors