Regular readers will know that I am a big fan of 37signals and have been using their products for a while now. The simplest but one of the most useful - is the TADA list. It allows you to create simple todo lists. While working on a project, we have been using it to keep track of things to be done.

Using the SmartNote SMS -> RSS feature has allowed us to have up to the minute updates on which tasks are being updated as they go. Sign up now if you would like to give it a whirl.