What are some alternatives?
When comparing Time&Time and Channel Time, you can also consider the following products
Spacetime - Work hour and time zone management for distributed teams.
Every Time Zone - Online tool for keeping up with times around the world.
Timezone.io - Keep track where and when your team is.
World Time Buddy - Effortless time conversion and world time.
timeanddate.com - Free Clock for your website or blog!
timee.io - World clocks web app. Easy scheduling of events and sharing them with people in different timezones.