A couple of months back I sign I signed up to the free version of a service called MindMeister.
I've used mind maps for a long time now. For anyone who hasn't used them - you should. Basically they are a way to capture and then organise information, whether that be tasks, labels, web pages, a shopping list or anything else you need to figure out. They allow you to visually see your thoughts floating on the page, and then link and group and label them till they make (at least a little) more sense.
I'd previously used two different pieces of software to create mind maps, one of which was quite powerful and low cost, but went out of business, with the other being incredibly over priced in my view, at least for the use I needed it for.
MindMeister.com intrigued me, because firstly it offered this ability online, and secondly - and most importantly, for a skinflint like me - it currently offers a free version.
I've since used it on several projects, one of which involved me working remotely with team members in another State. It allows you to create your maps with simple drag and drop functionality, and adds some basic tagging and formatting options that provide simple ways to note and work with the maps. You can export or print maps, and importantly you can also work collaboratively to review and finalise them.
Once you progress beyond the free version (which I'm going to sort as soon as I find my non-bouncing credit card) you can work offline with the maps, for that troublesome train journey to work.
If you haven't tried MindMeister yet - go.