osTicket - osTicket is a widely-used open source support ticket system.
Fieldmotion - Fieldmotion provide an intelligent field service management software to help businesses manage their fieldworkers using mobile device technology.
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
CrewTracks - Field tracking software for construction managers
OpenRMA - Computer Repair Shop Software. Mobile Repair shop Software and any king of repair shop. Track computer, mobile, tv, jewelry, bike repairs and any king of repair shop.
Field Force Tracker - Field Force Tracker - Ranked #1 most Affordable Field service management software designed for enterprise organizations service solutions Dispatch Board and Simplify scheduling, billing, estimating & more