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"iPhoneBrowser is a Windows based file browser for your iPhone. It features drag and drop uploading to your phone, automatic and manual backups of files on your phone, previews of text and picture files and very cool icons. "
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Just like PortableApps.com, this site offers a suite of no-install Windows apps for your USB key or on a locked-down PC.
"Collection of free portable apps organized into software suites and packs for download to specific-sized USB devices. View content in Italian (default) or English "
For a comparison with PortableApps, see http://www.downloadsquad.com/2009/06/22/4-portable-app-suites-to-power-up-your-usb-flash-drive/