Greg is described as 'Privacy-friendly, simple and powerful calendar app made by perfectionists for perfectionists' and is a Calendar app in the office & productivity category. There are more than 50 alternatives to Greg, not only websites but also apps for a variety of platforms, including Android, Windows, iPhone and Linux apps. The best Greg alternative is Google Calendar, which is free. Other great sites and apps similar to Greg are Proton Calendar, Etar, Simple Calendar and Nextcloud Calendar.
OneView Calendar is an innovative take on the calendar using a proportional and infinitely zoomable timeline. Days on the calendar are proportionally sized with weeks to help you get a proper feel for your plans.
