What are some alternatives?
When comparing Ops Calender and Time.ly, you can also consider the following products
Teamup Calendar - Cloud-based calendaring using capability URL, application developed in Zurich, Switzerland.
Teamweek - A project management software to help you get the best overview. Plan fast, change plans faster!
CalReply - CalReply is a Calendaring platform that enables TV networks and businesses to enable fans and viewers to subscribe to event schedules.
Google Calendar - Spend less time managing your day & more time enjoying it
Tockify - Customizable web calendars that blend into your site
CalendarX - Get a calendar your audience can follow