WotWen is a calendar for people who don't want to share their data with one of the large, online calendar providers such as Google, Microsoft, etc. It's not as sophisticated as theirs but it works okay and sends you an email every day showing what events you have that day. Also, nobody looks at or shares your information with anybody else.

If you select 'Stay signed in' when you log in, it stores a persistent cookie on your device which means that every time you go to the site you will see your agenda without logging in again. Obviously, you should only do this for devices you do not share with others.

The site is designed for desktop, apart from the home page/agenda, which is simple enough to display on most devices in a readable way.