eper is a loose collection of Erlang Performance related tools.

  sherk - a profiler, similar to Linux oprofile or MacOs shark
  gperf - a graphical performance monitor; shows CPU, memory and network usage
  dtop  - similar to unix top
  ntop  - visualizes network traffic
  atop  - shows various aspects of the VM allocators
  redbug- similar to the OTP dbg application, but safer, better etc.