Reminder - A better way to keep track of your reminders 📝
vim-taskwarrior - a vim interface for taskwarrior
Wonder for Slack - Remember the things your team forgets
Calcurse - Calcurse is a calendar and scheduling application for the command line.
Yuzz.it - A smart personal reminder
Toodledo - Toodledo provides a set of tools to increase the productivity.