Make Room from Urban Barn lets you layout hundreds of pieces of standard furniture, rugs, and other items around rooms to see how they fit together. You can customize the size and color of both the rooms and the furniture. You can also save your layouts if you register with the site, or use it as a shopping list.
WiFi Stumbler is a free browser based WiFi hotspot finder. It provides detailed, real-time and continuously updated information about nearby wireless networks (even those with hidden SSIDs), including the type of access point, MAC address, wireless channel, signal strength, encryption type and more. It requires a Java-enabled browser
TitanPad lets a group of people edit the same document simultaneously, with infinite undo. It is a resurrection of EtherPad, a document collaboration tool that was bought, then shut down by Google. No sign up is required for creating public documents. Documents can be exported to a number of different format, such as DOC, HTML etc.