I love Backpack. I use the free version and couldn't be without it because it keeps me on track throughout the day. You can get up to five pages free then add notes, to do lists, reminders and a couple of writeboards for collaboration with someone if you want. (Your pages are private unless you choose to share them with anyone, and even then you need to give them a password.) You can have 2 users free. My favorite thing's the reminders. Set one up and it'll send you an email reminding you to do whatever. You can make it one time or repetitive - daily, weekly, monthly, etc or at specific times. Best of all is the Firefox addon which lets you add a reminder to a page via a pop up box on your browser. You don't even need to go to the site. Just fill it in and it adds it for you to the page. I use this every single day. The lists are wonderful for organising yourself too. You can make a to-do list then as you check things off, it moves them to another part of the page under the main list. They aren't deleted until you physically trash them which makes it great for seeing what you've done in a day and you can edit them too. Even if you've already checked it off, you can put it back again on the list with a single click if need be. There's lots of other features to Backpack but those are the ones I use all the time. I think you guys may like it too! There's no affiliation or anything, I'm just a big fan.