I currently use Thunderbird/Lightning for my calendar. It syncs great with Google Calendar which syncs with my iPod touch. Now I want the same kind of process for a task list.
I like remember the milk, but I haven't been able to figure out how to do a two-way sync on Lightning/Sunbird. I have used the plugin for sunbird, but its kind of buggy and doesn't work with the nightly of it which I use because I find it to be more stable then the latest stable release.
I know about the remember the milk desktop applications, but I am looking for just one application to do everything.