There are several world clock tools available, each with its own set of features. Some popular options include:
1. World Time Buddy: An easy-to-use tool that allows you to compare time zones and schedule meetings or emails. 2. Time Zone Converter by timeanddate.com: Provides conversion between different time zones and includes a world clock feature. 3. Google Calendar: While primarily a scheduling tool, Google Calendar allows you to add multiple time zones, making it easier to plan your emails.