curl and libcurl is a tool for transferring files using URL syntax. It supports HTTP, HTTPS, FTP, FTPS, SCP, SFTP, TFTP, DICT, TELNET, LDAP, POP3, IMAP, SMTP, RTSP, RTMP, and FILE, as well as HTTP-post, HTTP-put, cookies, FTP upload, resumed transfers, passwords, port numbers, SSL certificates, Kerberos, and proxies. It is powered by libcurl, the client-side URL transfer library. There are bindings to libcurl for about 40 languages and environments.
Hostinfo is a utility for looking up hostnames and IPv4 addresses. Hostinfo uses the gethostbyname(3) and getaddrbyname(3) function calls, which means it tells you what your operating system really thinks rather than simply doing direct DNS lookups. Hostinfo provides options for both displaying and interpreting IP addresses in hexadecimal and backslash-octal notations as well as in the traditional base-10 dotted-quad notation.
xping is a very simple diagnostic tool primarily for system and network administrators. It provides a graphical display of systems and whether or not they are responsive to pings. This information is updated periodically by the tool, and is useful for determining when systems have crashed or there are network faults.
ZooLib allows one to write a single set of C++ sources which can be compiled into native executables for Mac OS, Windows, BeOS, or POSIX-compliant systems that use the X Window system (such as Linux). Zoolib provides a GUI toolkit with a uniquely flexible layout system. It also provides a single-file database format, TCP networking, and extensive debugging support. ZooLib applications are multithreaded. ZooLib requires only minimal support from the underlying OS and platform GUI layer, and thus could be ported to a completely new platform without too much difficulty. ZooLib is fully production quality on Windows and MacOS, completely implemented but untested on BeOS, and not yet complete on POSIX. Please note that the sources from the "demo" branch are also required to build ZooLib or to get started writing your own ZooLib applications.
bmon is a portable bandwidth monitor and rate estimator. It supports various input methods for different architectures. Various output modes exist, including an interactive curses interface, lightweight HTML output, and simple ASCII output. Statistics may be distributed over a network using multicast or unicast and collected at some point to generate a summary of statistics for a set of nodes.
MIDAS NMS is a highly configurable network monitoring and network intrusion detection server. It uses a distributed client/server model that allows it to scale to very large networks, and features highly optimized Snort support that dramatically reduces the overhead of both the Snort Sensor and the alert data repository. It also supports Netsaint/Nagios plugins and Big Brother clients, allowing for easy migration.