Tryoup - Cloud-based solution for managing field service operations
Time Zone Converter - Time Zone Converter is an online productivity tool to calculate exact time across time zones.
ManicTime - Track your computer usage and use collected data to accurately tag time.
Time Zone Pro - A beautiful world clock for friends, family, clients and more
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
Miranda - Time (zone) travelling