I was surprised to see no one mentioning calendar/reminder tools. Maybe it's because this is Hacker News and more folks are focused on, well, hacking and theref

I was surprised to see no one mentioning calendar/reminder tools. Maybe it's because this is Hacker News and more folks are focused on, well, hacking and therefore when they hear the term "productive" they think about being a more productive hacker - I don't know. I do know that I would be far less productive without a tool to set reminders - the idea of "Set it and forget it" leaves room in my brain for more. Oh sure I have lots of other tools for productivity including programming-related tools but the most productive tool I use is my calendar with reminders and tasks.