Web-based project manager Task2Gather lets you organize your to-do-list online. We're all about organisation here at MyThings, so this is right up our alley!

"Task2Gather's interface is spartan and uncluttered, and accomodates projects with sub-tasks. You can share projects and notes with other users to collaborate, as well as assign deadlines, color code, and mark off progress. Although the interface is easy on the eyes and not hard to use once you create your first few projects, initial use may be a little awkward. When you create a new project or task, in order to rename it from New Project or New Task you have to click on the properties box in the middle of the interface to apply the name to it."