salesforce.com offers an Offline Edition of its application for use by mobile salespeople. It provides access to Accounts, Contacts, Opportunities, and Activity history, within a familiar salesforce.com interface, and bidirectionally synchs with salesforce.com's classic "online edition".

There is the catch: You have to synch it, both before you go on the road, and when you get back!

Here is how you can ensure you never work with stale data again! Be a hero, and recommend this to all your Offline users: Schedule the synching using Microsoft Windows Scheduler. For example, schedule offline to popup every day at 3pm, to remind you to click the synch button.