Our customers include:

  • Discovery World at Pier Wisconsin
  • The Pabst Theater
  • Milwaukee Ballet
  • DuPont Corporation
  • Creative Business
  • Xaloy, Inc.
  • Northwestern Mutual Life
  • DePaul University
  • TAP Pharmaceutical Products
  • The Belt Railway Company of Chicago

About Concerted

Concerted Systems LLC was founded in 2005 to provide the museum and arts community with a superior solution for ticketing, registration, and patron-donor management. Its managing partners, Taskin Rahman and Steve Oelschlager, have a combined 30 years of experience in the areas of software development, web design, and marketing communications.

Our office is located in downtown Grayslake, Illinois, halfway between Chicago and Milwaukee. We enjoy our small-town location with easy access to two metro areas. Come by for a visit and we’ll head out for a root beer float at Dog & Suds or the fish fry at the politically incorrect Last Chance Saloon.