Packet Sniffer SDK (PSSDK) is the most powerful component suite for network packet capture in Windows OS family environment. All Packet Sniffer SDK editions (DLL,VCL, and static libraries for VC and Borland compilers) don't require any pre-installed packet drivers, support Gigabit networks, work with multiprocessor (SMP) systems, and have BPF (BSD packet filtering) engine on the internal driver level.
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; Support 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 to processes (including loopback traffic); Assembling of TCP sessions in data streams; High-performance traffic delivering to application and buffering 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 an internal packet driver, which is dynamically loaded/unloaded when the application, using Packet Sniffer SDK, is launched/closed, that allows you to develop absolutely portable applications.
Sniff'em 1.12 - Windows based Packet sniffer
Connection-oriented sniffer and analyzer.
Capsa Packet Sniffer 10.0
Monitor and Troubleshoot Network in Real Time
Packet analyzer and protocol decoder
Be good. Watch your SYNs !