Cfengine is a tool for setting up and maintaining BSD and System-5-like operating system optionally attached to a TCP/IP network. You can think of cfengine as a very high level language, much higher level than Perl or shell: a single statement can result in many hundreds of operations being performed on multiple hosts. Cfengine is good at performing a lot of common system administration tasks, and allows you to build on its strengths with your own scripts.
Habitat is an application and system monitoring system which captures, stores, and visualises table-based time series data. Monitor probes exist for Linux and Solaris with Windows and others coming soon. It has a command line interface, a fast GUI client for graphical visualisation, and a simple format for extending data capture in the agent. It can access data from its peers directly, by file sharing, or with the use of a separate central archiving repository to scale to installations of significant size.
muCommander is a cross-platform file manager with a dual-pane interface that features support for FTP, SFTP, SMB, NFS, HTTP, Amazon S3, Hadoop HDFS, Bonjour/Zeroconf, email attachments, archives in many formats (including Zip, RAR, 7z, GZip, Tar, Bzip2, ISO, NRG, AR, Deb, and LST), bookmarks, credential management, themes, multiple windows, full keyboard control, and many configuration options. It is available in 23 languages.
Netwib provides most functions needed by network programs. Its objective is to let programmers easily create network programs. This library provides features for Ethernet, IPv4, IPv6, UDP, TCP, ICMP, ARP, and RARP protocols. It supports spoofing, sniffing, client, and server creation. Furthermore, netwib contains high level functions dealing with data handling.