How do you use technology (e.g. task managers) to manage your time and increase productivity?

The only habit that has stuck for me is using two tags in Gmail: #action and #waiting. It's a mix of Getting Things Done and Inbox Zero. Go through all your mail, respond/read the fast stuff, and then move things into action that will take some time and need to be done. If I respond to something and expect/need a reply, then I tag those as waiting.

We launched our website „Tira“ today, maybe you want to check that out! Tira is an all-in-one solution for team collaboration. With features like a chat, a board for to-do lists, a calendar and many more. The idea behind Tira is to stop the constant app switching to keep in touch with your team, especially when working remote or hybrid! This is supposed to increase productivity and gives you the possibility to use your time for your work! We would be very grateful for some feedback so we can improve our product and can truly meet our customers needs!

This may not fit what most people are looking for with this question, but I've been more productive lately since trying to eliminate task managers more, and instead focus on one big thing per day. If I can get my most important task of the day completed, it's overall a win for me.