Free Monitor Tools

• Scrutinizer NetFlow Analyzer - A FREE version of Plixer's very own Scrutinizer. Supports unlimited flows on unlimited routers or switches.
• Denika Performance Trender - Amazing free SNMP trending tool based on MRTG. Keeps things easier than MRTG and provides high level summary reports.
• Flowalyzer - Test and configure your Cisco NetFlow and sFlow sending devices with Flowalyzer.
• Getif - A great SNMP MIB browser
• Qcheck - This is a nifty utility for running response time, throughput and streaming tests.
• STG - Realtime SNMP graphing utility. You need to know the MIB.
• Wireshark - A packet analyzer that runs on Microsoft Windows and UNIX. One of the best values on the web.
• Nmap - A free and open source network scanning utility for exploring the network or security auditing.
• Zenmap Security Scanner GUI is also available for free, which makes Nmap easier for beginners and adds some features