If you mean saving datas on a network ? so there is Wireshark (also available on windows).
Same here, a lot of filters ec, and allows you to save captured packets on .pcap files.
I've heard you can extract images etc with a softare on windows, but i can't remember which one.
You should try Wireshark, even if it's not what u're looking for. It's a software you MUST know when sniffing networks