Sign in

Private company

Computer Support Services

Logo: cssi.com3

Multi-national company providing technology solutions and professional services

CSSI Technologies, Inc., formerly Computer Support Services, Inc., is an IT systems integration and software development/customization company. Computer Support Services, Inc. (CSSI) primarily provides supply chain solutions. CSSI headquarters is located in Lewisburg, Pennsylvania.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1973Founded1

See how the biggest companies compare on our leaderboards

CSSI Technologies, Inc., formerly Computer Support Services, Inc., is an IT systems integration and software development/customization company.2

The story

The company was founded in 1973 as Computer Support Services by Ronald P. Lewis to provide companies with data processing services. Computer Support Services, also known as RPL & Co. At that time, it was incorporated in 1978. In 1980, the company established itself as a service-oriented company under new owners, Delmar R. Ritter and David L. Cornelius. With sales reaching $2.4 million, the company added a third owner, Thomas A. Erickson, in 1989.

The company acquired Quality Data Products of Williamsport, Pennsylvania, from David Franklin, in 1993. In 2011, CSSI opened a subsidiary, CSSI Global Technologies.

In 2018, the company announced the change of the company's name to CSSI Technologies, and the divestment of its Core Integrator software business, which is independently operated as CoreIntegrator, LLC.

From Wikipedia’s article on Computer Support Services, shared under CC BY-SA 4.0.4

Timeline

  1. 1973Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2
  3. 3
  4. 4