KosmoTime - The to do list with super powers
Cron - Cron Calendar.
Todo Tab - A privacy-first todo list
Vimcal - Vimcal is the world’s fastest calendar, beautifully designed for people who work remotely and live in their calendars.
Gone - An ephemeral to-do list
BallerTODO - Ditch the list! Organize like a baller, get stuff done.