The best replacement for flexraid is unraid.

The best alternatives to flexraid are rated as following:
★★★★★  unraid
★★★★  drivepool
★★★★  freenas
★★★★  drive bender
★★★  storage spaces
★★  disparity
★★  snapraid
★★  xraid
★  x-raid2

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

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



Google Trends

Scale is based on the average worldwide traffic of flexraid in all years. Click on graph for more.
flexraid
unraid
drivepool