Product Overview

e-Systems offers a variety of applications and custom systems to meet many business needs. Developed systems include the Invoice Management System and our flagship product suite, Attaché©. The Attaché© software suite includes full-featured energy management applications offering enterprise application flexibility, security and stability.

Explore each of our developed products by clicking on the product's name.


Attaché Physical is a complete Physical Natural Gas Management System. From deal consummation, to scheduling, all the way through accounting, Attaché Physical is the complete Natural Gas software solution.
The Attaché Fuel Oil system is a fully functional fuel oil management and accounting system for capturing shipments to and consumption of oil, maintaining operational and accounting inventory of oil and creating all appropriate related accounting transactions.
Attaché Emissions provides all of the functionality needed to capture, manage and account for Emissions Allowances and Offsets in an ever-changing regulatory environment.
Attaché Retail manages natural gas retail energy operations, including contracts, meter readings, invoices, tax calculations, cash posting and robust reporting.

IMS is a full-featured invoicing system designed with the flexibility for use in virtually any industry where product or service invoicing is needed. IMS offers detailed invoice creation, cash management and robust reporting features.