All for One Systemhaus AG was founded in 1978 as the consulting firm Härle, which initially focused on conventional consulting services. The transition to a vertically oriented, open system software and consulting firm came a few years later, and was underscored by the change of the company's name from "Unternehmensberatung Härle GmbH" to "All for One Systemhaus AG" in November 1998.

All for One employs around 400 staff worldwide. The head office of the company is located in Oberessendorf with regional offices in Berlin, Dortmund, Parma (Italy), Hanover, Munich, Stuttgart and Vancouver (Canada).

In North America, All for One Software, Inc. is a strategic part of the All for Documents corporate business segment, and is dedicated to provide the best ICR, OCR and Data Entry solutions available today.