The best replacement for accelerator is awaki.

The best alternatives to accelerator are rated as following:
★★★★★  awaki
★★★★★  touma
★★★★  bronzer
★★★  kihara
★★★  incubator
★★★  misaka
★★★  kakine
★★  getright
★  multiplier
★  railgun
★  maximizer
★  tanning lotion
★  gamma knife
★  accelerator
  flashget
  internet download manager
  dark matter
  game booster
  graphics card
  bronzer lotion
  brake

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

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



Google Trends

Scale is based on the average worldwide traffic of accelerator in all years. Click on graph for more.
accelerator
awaki
touma