1. Wiki on a Stick, something similar to GTD Tiddly Wiki Plus.

2. If you have reasonably-flexible IT people at work, they could set up web-based GTD tools on a server in-house. Tracks is one option there.

You could try Ready-Set-Do! — a file-system approach to getting things done — and see what you think. I designed it so that it can work through Mail.app. So you can export your lists to your work computer — even delegate things to and from your work Windows computer to your mac. I’m always looking for more feedback, suggestions, ideas.

There’s always the old fashioned approach: text files.

Lots of options here. One simple approach would be to keep a separate text file for each context (+ one for projects), using whatever tool works best to append new items to each file (Quicksilver, cat, etc.). Delete lines once they are completed. (If you want to keep an archive of past actions, put the files under version control.)

One caveat: I only know Mac and Linux, so I don’t know what types of utilities for manipulating text are available on Windows (other than Cygwin stuff).

You could then sync these to the iPhone as notes. You could also print these out if analog suits your fancy.

Use some sort of sync utility (rsync, unison, subversion) to move the updates back and forth over the USB drive. Or, if that’s too complicated, you could simply read and write to files directly on the USB drive.

For what it’s worth, here’s my own setup (two Macs at home and Linux at work):

• Vim outliner to manipulate comprehensive GTD outline (actions, projects, someday/maybe, other lists).

• A few scripts to extract context and project lists from the main GTD outline and print out a daily sheet of lists.

• Wonderful text based calendar called remind (been around since the 80s).

• Subversion over remote server to keep the computers in sync. (This could just as easily be done via a USB stick.)

If I needed to add a Windows machine to the mix (God forbid), I would install Cygwin to get Unix tools.

A bit of a steep learning curve and a little tricky to setup, but Emacs runs on Windows, Mac and Linux. Using Org-mode in Emacs gives good GTD capability and it has several file linking options to work with external files.

I’m using EmacsW32 on 3 Windows PCs and AquaMacs on a Mac. These versions of Emacs install directly to Windows or OSx respectively. Directory structures are duplicated on each computer and they are synced using SyncbackSE on Windows and Chronosync on the Mac. This is either through a 16gb USB flashdrive or via a NAS depending on which computer.

Email is kept in sync via IMAP and FastMail, and Plaxo keeps address books and calendars in sync. FoxMarks in Firefox keeps bookmarks in sync between all computers.

Still getting all this working, and as I say Emacs takes a bit of learning, but it is incredibly powerful and versatile.

Graham