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Image gallery: Reader favorites -- 10 great free network tools

From sniffing to mapping to monitoring, these utilities perform surprisingly sophisticated tasks

By Greg Schaffer
May 20, 2008 12:00 PM ET

Editor's note: These images accompany our story "Reader favorites: 10 great free network tools," where you can find out more information about each product.

Wireshark digs deep into all layers of each packet it captures.

Wireshark digs deep into all layers of each packet it captures.

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