This is a complete rewrite of my popular event system for XenForo. XenAtendo is a calendar and event management system. The math involved with building dates has been completely rewritten from the previous version.
Basic Features:

• Monthly, weekly and agenda style event listings
• Fully responsive design, even the monthly calendar view
• Event creation with the ability to create event threads
• Events can have multiple and/or repeating occurrences
• Users can RSVP to individual occurrences and receive reminder alerts
• Google Maps integration with geo-location and address searching
• Users can filter event listings by location distance
• Events can be categorized with pre-defined keywords
• Users can filter event listings by keywords
• Events can be exported to iCAL or CSV formats

Installation:

• Don't forget to set up your permissions

Upgrading from XF1:

• After installing this addon, head to your admin control panel
• Run the appropriate import procedure in Tools > Import Data