My Time Zone is a browser extension for automatic time zone conversion. Just highlight to convert between time zones.
Flag Times is a tool to quickly and easily see what time it is in other time zones within the Mac toolbar.
Spacetime allows your team to set their work hours and automatically detects and handles time zone conversions for you.
It moves conversations like “what time is it for you?” and “when do you start your day tomorrow?” into a simple dashboard and Slack bot. Simply message the bot (@spacetime 3pm) and get the answers you need.