The best replacement for freezer bags is storage bags.

The best alternatives to freezer bags are rated as following:
★★★★★  storage bags
★★  freezer paper
★★  vacuum sealers
★  sandwich bags
★  butcher paper

Your alternative for freezer bags is not listed? Suggest!
Speaking about freezer bags, one probably shouldn't forget about vacuum seal.

Other search terms related to freezer bags and their ratings are:
★★★★★ vacuum seal
You have in mind a companion for freezer bags and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of freezer bags in all years. Click on graph for more.
freezer bags
storage bags
freezer paper