The best replacement for entourage is outlook.

The best alternatives to entourage are rated as following:
★★★★★  outlook
★★★★★  mail
★★★★  mac mail
★★★  apple mail
★★  ical
★★  outlook 2011
★★  thunderbird
★  imail
★  sedona
★  sopranos
★  hawks gym
★  californication
★  kia sedona
★  posse
★  bluntville
★  hawks
★  sex and the city
  outlook for mac
  retinue
  seth rogen
  odyssey
  weeds
  mail.app
  how to make it in america
  entourages

Your alternative for entourage is not listed? Suggest!
Speaking about entourage, one probably shouldn't forget about exchange 2007.

Other search terms related to entourage and their ratings are:
★★★★★ exchange 2007
★★★ ical
★★ google calendar
★ mobileme
You have in mind a companion for entourage and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of entourage in all years. Click on graph for more.
entourage
outlook
mail