The best replacement for hand saw is circular saw.

The best alternatives to hand saw are rated as following:
★★★★★  circular saw
★★★★★  table saw
★★★  chainsaw
★★★  jigsaw
★★★  hacksaw
★★  bow saw
★  panel saw
  hack saw

Your alternative for hand saw is not listed? Suggest!
Speaking about hand saw, one probably shouldn't forget about miter box.

Other search terms related to hand saw and their ratings are:
★★★★★ miter box
You have in mind a companion for hand saw and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of hand saw in all years. Click on graph for more.
hand saw
circular saw
table saw