Are there other sites like red light center and second life?

Yes there are many virtual worlds similar to both Second Life and Red Light Centre such as

  • InWorldz
  • Avination
  • Kitely
  • 3rd Rock Grid
  • Virtual Highway
  • FrancoGrid
  • Island Oasis
  • Your Alternative Life
  • Metropolis
  • German Grid
  • Craft-World
  • Open Virtual Worlds
  • Logicamp
  • Open Sim Russia
  • Your Sim Spot
  • Virtual Worlds
  • Jokaydia
  • IMVU