Best sniff software for free download

HHD Accurate Network Monitor - ip packet sniffing, monitoring and protocol analyzer software tool that can sniff internet protocols performing tcp / ip, udp / ip communication traffic analysis. LAN connection sniffer and internet data capture utility
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232Analyzer is an advanced serial protocol analyzer software, terminal, debugger, monitor, sniffer, it allows programmers, engineers to control, debug, monitor, sniff, test and analyze serial port activities with RS232/RS485/RS422/TTL converters.
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Use Serial Port Terminal to connect to remote computer using null-modem, send or receive various types of data over serial line, redirect data into specified file, monitor data exchange between serial devices, troubleshoot modem settings and more.
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Sniff out wasted space with The Best Duplicate File Finder available. Space Hound 4 eliminates duplicate and unused files that are cluttering up your hard drive and causing problems. Uncludes File & Directory Management, Zip & Unzip, file Vie
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Packet Sniffer SDK is a library set for packet capture and network analysis for all Win32 platforms.The main features of the Packet Sniffer SDK library are:Any pre-installed packet drivers are not required; Support of multi-Gigabit networks; Support of all modern development environments for Windows; All PSSDK editions (VCL, DLL, and static libraries) are compiled from the same well-optimized C code. Therefore you may be assured that any Packet Sniffer SDK improvement is implemented in all its editions; Support of multiprocessor (SMP) systems; Support of packet filtering by BPF (BSD Packet Filter, user-settable packet filters) on the internal packet driver level; Supports of new FastBPF technology (Just-In-Time BPF filters compilation, works approximately 6 times faster than "classic" BPF filtering); Support of packet generation and sending functions; Support of local TCP/UDP traffic capturing with binding it to processes (including loopback traffic); Assembling of TCP sessions in data streams; High-performance traffic delivering to application and buffering it using queue Packets Pool; Support of BPF assembler for BPF filters programming; Support of disassembling BPF filters to BPF assembler source texts;All editions of Packet Sniffer SDK components/libraries contain internal packet driver, which is dynamically loaded/unloaded when the application, using Packet Sniffer SDK, is launched/closed, that allows to develop absolutely portable applications.
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Serial Port Sniffer is a powerful advanced ActiveX Control that allows your application to sniff (fully monitor and edit data flows) serial port in your system. Serial Port Sniffer ActiveX Control detects all serial port activity in your system, all applications that work with serial port and all the data that is being sent and received can be easily monitored with Serial Port Sniffer ActiveX Control within your own application. Some of the features are: Allows to monitor and edit serial data streams directly from your application; Unique ActiveX Control - no need to use additional software for monitoring; Wide selection of supported events, methods and properties; Control lines support (DTR, RTS, CTS, RTS); No reboot required during installation and implementation; Usage examples for Microsoft VC++ and Microsoft Visual Basic included.
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LAN and WLAN Sniffer. A program for low-level network packets capturing and analyzing in real-time. Includes: ICQ, AIM, IRC, MSN analyzers and ARP-spoofer. Allows to capture all network traffic even in switched LAN. Sniffer supports parsing of following protocols: IP, TCP, UDP and many others, Also includes: tcpdump, tcpflow, tcpstat.
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