Snort 3 is the next major release of the Snort utility:

Here are some key features of Snort 3:

    Support multiple packet processing threads
    Use a shared configuration and attribute table
    Use a simple, scriptable configuration
    Make key components pluggable
    Autodetect services for portless configuration
    Support sticky buffers in rules
    Autogenerate reference documentation
    Provide better cross platform support
    Facilitate component testing

Additional features on the roadmap include:

    Use a shared network map
    Support pipelining of packet processing
    Support hardware offload and data plane integration
    Support proxy mode
    Windows support

WWW: http://www.snort.org/