Cyrus Daboo

Apple

Apple Client and CALDAV server

Michael Douglass

RPI

Bedework CALDAV Server

Daniel Boelzle

Mozilla

Lightning and Thunderbird Calendar clients

Tony Becker

Marware

Marware Calendar

Mikeal Rogers

OSAF

Cosmo CALDAV server and Chandler Client

Daniel Rauschenbach

Synchronica

CALDAV Server