The best replacement for br2 is nbs.

The best alternatives to br2 are rated as following:
★★★★★  nbs
★★★★★  icl higher boiling point
★★★★  cci 200
★★★★  210m
★★★  icl
★★★  icl boiling point
★★  br
★★  mpx
★  i2 boiling point
★  rs1
★  bx2
★  cci 250
★  cl2 boiling point
★  cci 200 primers
  federal 210m
  hbr

Your alternative for br2 is not listed? Suggest!
Speaking about br2, one probably shouldn't forget about alkene.

Other search terms related to br2 and their ratings are:
★★★★★ alkene
★★★★★ ccl4
★★★ ketone
★★★ febr3
★★ ch2cl2
★★ cyclohexene
★ alkyne
★ cyclohexane
★ conjugated diene
phenol
You have in mind a companion for br2 and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of br2 in all years. Click on graph for more.
br2
nbs
icl higher boiling point