The best replacement for foam brush is bristle brush.

The best alternatives to foam brush are rated as following:
★★★★★  bristle brush
★  paintbrush

Your alternative for foam brush is not listed? Suggest!
Speaking about foam brush, one probably shouldn't forget about polyurethane.

Other search terms related to foam brush and their ratings are:
★★★★★ polyurethane
★★ polycrylic
You have in mind a companion for foam brush and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of foam brush in all years. Click on graph for more.
foam brush
bristle brush
paintbrush