Add to Calendar Link Generator.
Cal.et is a simple and free “Add to Calendar” link generator that can be shared on social media, newsletters, websites, emails, and everywhere else with ease.
Cal.et's answer
Cal.et is simply free and easy to use.
AddEvent - AddEvent is an Add to Calendar button for one-time and multiple events.
Button for Google Calendar™ - See your daily schedule and join meetings in one-click.
Microsoft Outlook Calendar - Calendar is a time-management web application by Microsoft.
Add-to-Calendar Button Generator - This open source projects lets everybody create amazing buttons, where users can add events to their calendars.
Eventable - Eventable is a platform that allows users to communicate with their customers according to their calendar.
Vimcal - Vimcal is the world’s fastest calendar, beautifully designed for people who work remotely and live in their calendars.