I've used Trello and Monday in the past, but, ever since I discovered Notion (https://www.notion.so/), I haven't looked back. It's my go-to app for organizing tasks, goals, and more. And, it's completely free.
Apart from that, I use OneDrive a lot to store all my files, photos, and important documents on the cloud. I can't imagine a life without it. I even back up my Instagram posts (via...