In 1994, several PEEK beta test sites were impressed with CommonPoint, including one production success story at American Express which replaced its existing six month legacy application in only six weeks. At first in 1994, they'd said "We are almost overwhelmed by the complexity of I don't know if the typical corporate developer is going to be able to assimilate this in their shop." but in 1995 they concluded the project with, "The CommonPoint frameworks — and I'm not exaggerating — are brilliant in the way they cover the technical issues [of that project." Others were disappointed in the marked lack of crossplatform presence on HP/UX, Mac OS, and Windows NT which strictly limited any adoption of CommonPoint even among enthusiasts.