Diald manages network links, particularly on-demand links such as dial-up SLIP or PPP. It can also be used to manage and/or monitor any network interface. Diald monitors traffic on the link and makes intelligent (and highly configurable) decisions as to when the link should be brought up or taken down. The included control program, dctrl, runs on any system with Tcl/Tk (yes, even Windows) and allows diald to be controlled and monitored remotely.
GASP is a generic protocol encoder and decoder. It offers a complete scripting language (based on Tcl) which allows you to construct or analyze any packet of data based on abstract protocol definition. This version includes all the basics networking protocols (IP, ARP, ICMP, TCP, UDP, and DNS), some protocols for archivers (ZIP, GZIP, and TAR), and some multimedia protocols (JPEG, GIF, and PNG).
Moodss is a modular monitoring application, which supports operating systems (Linux, UNIX, Windows, etc.), databases (MySQL, Oracle, PostgreSQL, DB2, ODBC, etc.), networking (SNMP, Apache, etc.), and any device or process for which a module can be developed (in Tcl, Python, Perl, Java, and C). An intuitive GUI with full drag'n'drop support allows the construction of dashboards with graphs, pie charts, etc., while the thresholds functionality includes emails and user defined scripts. Monitored data can be archived in a SQL database by both the GUI and the companion daemon, so that complete history over time can be made available from Web pages or common spreadsheet software. It can even be used for future behavior prediction or capacity planning, from the included predictor tool, based on powerful statistical methods and artificial neural networks.
IRRToolSet is a set of policy analysis tools, written in C++. It's designed to run under UNIX, using Tcl/Tk for graphics. There are tools for generating router configuration files, displaying and checking routes, generating aggregations of networks, etc. This project was formerly known as the Routing Arbiter ToolSet (RAToolset), and was maintained by ISI.
Network Traffic Analyser (formerly known as sniffer) is designed to be an extremely powerful, configurable, and versatile tool for monitoring network traffic. It can be used as a plain sniffer, as a tool for accounting, dynamic firewall updates, and many more things. It features scripting support and an event-driven architecture.