For the past several years I’ve just been using a Word document with a multi-layer bulleted list to keep track of tasks, but that’s getting a little hard to manage. I started looking for something with collapsible items and filters to show certain categories, statuses, etc. There are a lot of popular web-based applications, but I often work offline, so I looked for a desktop app and found ToDo List. At first I didn’t like a few things about the way it behaved, but after I dug through all the preferences I was able to get it running the way I wanted.