This page contains links to sites of relevance to Shevron's business, plus one or two you might find interesting!
Glovia, producers of the Glovia business automation system.
SAP, The market leader in ERP solutions
EFACS, Leading tier 2/3 ERP system
J.D.Edwards, One of the top 4 ERP solution providers (Now with Oracle)
Autodesk, creators of AutoCAD and many other great software packages (look at Fusion360!)