Cyberwolf > Acumen www.cyberwolf.com/

Advantage Computing Systems www.advantagecs.com

Media Services Group > Elan / Bookworks / CISPUB
www.msgl.com

Ingenta > Vista / Ingenta
www.ingenta.com/

Global Turnkey Systems: Unison

Intelligent Publishing Technologies > IPub www.ipubtech.com/

Trilogy Systems, Ltd

Morse Data www.morsedata.com

Klopotek AG
https://www.klopotek.com/