Oil & Gas Systems Inc. (OGsys)

Since 1982, OGsys has been providing user-friendly, intuitive oil and gas accounting software that accelerates answers to critical questions impacting daily productivity and overall success. More than 500 oil and gas companies rely on OGsys for its software solutions and expert support. The company has offices in Fort Worth and Houston.

Editor's note: Updated Aug. 28, 2019.