AirHelp - Get paid when you're delayed!
OpenMAINT - openMAINT manages movable assets, the real estate, and the related maintaining, logistic and economic activities, GIS and BIM
Service - Customer service issues solved for you, on demand, for free.
Fishbowl Warehouse - Fishbowl Warehouse is the leading Warehouse Inventory Management solution that helps you keep track of your inventory levels and movements, so you can make better decisions about what to stock and when to order more products.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
AssetTiger - AssetTiger is a free community service and cloud-based asset management tool.