The best replacement for gameboid is tiger gba.

The best alternatives to gameboid are rated as following:
★★★★★  tiger gba
★★★★★  gbaoid
★★★★  my boy
★★★  gba emu
★  gba
★  vgba

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

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



Google Trends

Scale is based on the average worldwide traffic of gameboid in all years. Click on graph for more.
gameboid
tiger gba
gbaoid