nefu (network fidelity utility) is a Unix daemon that monitors services over the network. It uses a "no false alarms" fault verification algorithm, and understands network dependancies. Natively-monitored protocols include ICMP echo (ping), SSH, IPP, DNS, HTTP, POP, NTP, IMAP, SMTP, and LDAP, as well as having facilities to execute external programs. Status pages are available via finger or the Web.
Open1x is an open source implementation of the IEEE 802.1x protocol. The project has two components: xsupplicant and authenticator. Xsupplicant is an implementation of the supplicant (i.e., client) side of the protocol and works under Linux and Mac OS X. Authenticator is an implementation of the authenticator and works only under Linux.
Netdisco is a Web-based network management tool. Users can locate the switch port of an end-user system by IP or MAC address. Data is stored using a SQL database. Cisco Discovery Protocol (CDP) optionally provides automatic discovery of the network topology. The network is inventoried by both device model and operating system (like IOS). It uses router ARP tables and L2 switch MAC forwarding tables to locate nodes on physical ports and track them by their IP addresses. For each node, a time stamped history of the ports it has visited and the IP addresses it has used is maintained. It gets all its data, including CDP topology information, with SNMP polls and DNS queries. Security features include a wire-side Wireless Access Point (AP) locator.
Howl is a cross platform implementation of the Zeroconf zero configuration networking standard. It includes daemons and a client side SDK for registering, browsing, and resolving network services, and assigning link local IP addresses without a DHCP server. On Windows 2000/XP, it includes a sidebar in Internet Explorer that allows users to browse zeroconf-enabled Web and FTP servers.
The PEAK library tries to achieve high performance in combining multi-threading with an efficient I/O event model. You can write event-based applications that use massive sockets I/O, timers, and signals. Its underlying I/O multiplexing engine supports kqueue(2) (FreeBSD, NetBSD, and Mac OS X), epoll(2) (Linux 2.6), and /dev/poll (Solaris). It provides support for optimized memory allocations, basic database primitives, and synchronization.
plugdaemon is a load-balancing "plug" proxy. It allows you to forward TCP connections to one or multiple hosts, using load balancing or failover, and to route the connections through an HTTPS proxy. Access control is done by source interface or by originating IP. Outgoing connections can be bound to a specific IP address.
User Manager is a supplement to the "Accounts" pane in the Mac OS X System Preferences, designed for use with small home networks. User Manager is targeted at power users who desire full control over user and group attributes, without the need to resort to using the NetInfo Manager. With it, you can create, edit, or delete users and groups in any Open Directory node (e.g. a NetInfo domain). The interface allows you to edit nearly all record attributes, including UID, GID, login shell, and home directory. You can also manage Unix group memberships using the drag-and-drop user and group-centric interfaces.
coNCePTuaL is a domain-specific programming language for rapidly generating programs that measure the performance and/or test the correctness of networks and network protocol layers. A few lines of coNCePTuaL code can produce programs that would take significantly more effort to write in a conventional programming language.
Tor is a network of virtual tunnels that allows people and groups to improve their privacy and security on the Internet. It also enables software developers to create new communication tools with built-in privacy features. It provides the foundation for a range of applications that allow organizations and individuals to share information over public networks without compromising their privacy. Individuals can use it to keep remote Websites from tracking them and their family members. They can also use it to connect to resources such as news sites or instant messaging services that are blocked by their local Internet service providers (ISPs).
NRL OLSR is the NRL's implementation of the OLSR ad-hoc mobile network routing protocol, using RFC 3626 packet formats. It supports IPv4 and IPv6. Support for Ethereal and NS2 exists but may not be current. NRL's implementation is derived from INRIA's OLSR software router, which is also available.