Network Tools

I'm trying to find products which can intelligently analyze network traffic to supplement traditional intrusion detection products. I'd like to get a look a Silent Runner, which offers visualization and analysis tools. Lancope Stealthwatch calls itself a "behavior-based IDS" which analyzes flows to identify anomalies. Incidentally, if you're looking for a giant list of IDS and other security products, visit Talisker's Network Security Resource. SPADE, the Statistical Packet Anomaly Detection Engine for Snort, is available but I have yet to try it.