If your team members all have Google accounts (and why wouldn't they?), sharing files and collaborating on them simultaneously and in real-time is a snap with Google Docs. A word processor and spreadsheet are your only choices--no free-form whiteboarding here--but the service is free and easy as pie to operate. - PC World

Customer relationship management isn't just for the Fortune 500. Even one-person shops can benefit from a more ordered approach to managing the sales process, tracking leads, and ensuring that follow-ups are done in a timely fashion. Salesforce.com requires some training and patience due to its vastness, but its exhaustive feature set and affordable pricing options make it a business must-have. - PC World

You can (and should) regularly back up files to an external hard drive or NAS (network-attached storage) de­­vice in your office--but what if the whole place goes up in smoke? Hedge your bet with an online backup service like Mozy, which automatically archives whatever you'd like across the Internet. - PC World

With Vyew, anyone can host an Internet session that lets scattered colleagues work together on a project in real time. This Web conferencing platform gives you a very simple whiteboard where you can upload documents for discussion, share your desktop, or create designs from scratch. - PC World

When it comes to finding employees, contractors, service providers, and even outsourcing partners, LinkedIn has proven to be an invaluable tool for many businesses. But the real beauty of LinkedIn is something that becomes apparent only with use and time: As you expand your network--recommending other businesses, and otherwise participating--you may find that other LinkedIn users are recommending your business, as well. In addition, a Q&A system lets you ask for general advice on all matters business. PC World