Brim
Application to efficiently search and analyze super-structured data
... the Zeek network analysis framework. Brim is especially useful to security and network operators that need to handle large packet captures, especially those that are cumbersome for Wireshark, tshark, or other packet analyzers. Inspired by the Unix-tools design pattern, everything Brim does can be run from the command line. Think of Brim's components like Lego blocks that you can easily interconnect and assemble. It’s all open source, so have a look.