A Disk Defragmenter program helps speed up your system as it will arrange all the fragmented pieces of a file close together. Microsoft offers another free but lesser-known command line utility that lets you have more control over the defragmentation process.
Looking for a free batch PDF converter? This article describes how you can convert several Office documents, PowerPoint Presentations and Excel Spreadsheets into the Adobe PDF format online at once using Google Docs.
Gmail now supports emoticons (or Smileys) provided you compose email messages in rich HTML mode. The smiley feature is available only in Gmail accounts but Google Apps users may try a hack to insert smileys in their messages.
Whether you want to read PDF attachments inside Outlook or want to make phones calls or need to track email messages, chances are that there already exists an Outlook add-in to help you perform that task effortlessly.
Whether you want to shift your Outlook emails and calendars to the online cloud or just want to keep your Outlook items in sync with an online service like Google Apps or Gmail, here are some free tools / web services to help you out.