What are some alternatives?
When comparing Ops Calender and silverlinecrm.com CalendarAnything, you can also consider the following products
Teamup Calendar - Cloud-based calendaring using capability URL, application developed in Zurich, Switzerland.
Time.ly - Time.ly is a collaborative calendar solution for websites.
Teamweek - A project management software to help you get the best overview. Plan fast, change plans faster!
Tockify - Customizable web calendars that blend into your site
Google Calendar - Spend less time managing your day & more time enjoying it
CalendarX - Get a calendar your audience can follow