Mac users interested in Wireshark for 32 bit generally download:
Read and write multiple capture file formats with this leading network protocol analyzer globally that serves as the standard tool in various industries and educational institutions. The solution supports tcpdump (libpcap), Pcap NG, Catapult DCT2000, Cisco Secure IDS iplog, Microsoft Network Monitor, Network General Sniffer (compressed and uncompressed), Sniffer Pro, NetXray, Network Instruments Observer, and NetScreen snoop.