I'd like to think something like this exists, but thus far I haven't found it. All I want is a synced (over the air, through MobileMe or otherwise) GTD solution to access/edit/add to-do items on: - iPhone - Mac OSX - Windows Why all three? The iPhone is obvious - I'd like to have my tasks available wherever I am. I use a Mac at home, thus I need to be able to view my tasks at home (and edit them with a full keyboard, larger screen, etc.). I use a Windows computer at work, and need to be able to use actions/contexts for work-related tasks as well. Currently I am using Remember the Milk, but nothing syncs nicely with it on the iPhone and the webapp is slow. OmniFocus almost gets there, but there is no Windows access available. An easy solution would be an online interface where you can add new tasks (like RTM), but that doesn't fully exist. (There is an online Ruby app for Omni that allows viewing all contexts/tasks and adding tasks to the INBOX only, but that requires too much work once you're back at the computer.) Things almost gets there as well, but again - no Windows access (at all). I can't add things to my iPhone all the time at work, I'd rather do it on the computer (Windows). Another downside of Things is it requires a WiFi connection for sync (same network for both syncing computer and iPhone). Appigo's ToDo app on the iPhone comes even closer, but still doesn't work well for what I'd like. ToDo syncs with RTM, but doesn't all access to your smart lists or tags. (I need to be able to sort my tasks by context at least - work needs to be separated from home, shopping, etc.). RTM has hinted that they are working on an iPhone app, but won't give any timeframe. I don't want to buy Appigo's app (which only half way works with RTM) if RTM releases one.