FieldEdge offers software for service companies including HVAC, plumbing, electrical, and more. Field service management software ( FSM) is a highly complex landscape with so many options to choose from, it can be confusing to even begin looking at which vendors might be right for your company. Software for field service companies. Field service management ( FSM) software can be utilized by companies for a range of tasks such as scheduling work, dispatching technicians, tracking employee activities, tracing vehicles, supporting driver safety, and integrating with inventory and other business systems. Type of software: Free for one user, indefinitely Features: Fergus offers all the basic features of a field service management program, including invoicing, scheduling, work order history, and a mobile app. Award- winning service and innovation.Trust the company that invented field service software! Free/ freemium field service management software 1. The # 1 Software for Home Service Companies. The field service management software to run your HVAC or Plumbing business is the one that connects the owner, office staff and technicians!