What are some alternatives?
When comparing World Time Buddy and Spacetime, you can also consider the following products
Time.is - exact time in any location
Timezone.io - Keep track where and when your team is.
Chronozone - The easy way to check times throughout the world.
TeamWatch - Simple menubar app to make remote work easier 💼⏰
timeanddate.com - Free Clock for your website or blog!
There - Never think of timezones again!