Elektra is a universal hierarchical configuration store, similar to GConf and the Windows Registry. It allows programs to read and save their configurations with a consistent API, and allows them to be aware of other applications' configurations, leveraging easy application integration. While architecturally similar to other OS registries, Elektra does not have most of the problems found in those implementations. Elektra includes a library, an API, and commandline and GUI tools for administration tasks.
Hitchhiker's Guide to the Internet is a German introduction to the technical aspects of the Internet. This book explains both the low-level protocols IP, ICMP, TCP, and UDP and the high-level protocols SMTP, POP3, IMAP4, NNTP, HTTP, Gopher, FTP, IRC, DICT, Finger, Daytime, DNS, and Whois.
Mooix is a multiuser object-oriented dimension (a MOO) layered over top of your favorite Unix system. To the user, mooix looks much like any other MOO. To the programmer, mooix objects look like directories full of files: executable methods, properties, and links to other objects. MOOs have historically had poor support for such things as real programming languages, encrypted logins, multitasking, and editors. Mooix inherits all of these things from the Unix system it is based on. At the same time, it's not wedded too tightly to Unix (e.g., it implements its own permissions system that is much more suited to a MOO environment than the historical Unix system).
oVirt is a small host image that provides libvirt service and hosts virtual machines (oVirt Node) and a Web-based virtual machine management console (oVirt Server Suite). It is built using existing open source components (libvirt, kvm, collectd, Ruby on Rails, PostgreSQL, and freeIPA). Presently, the oVirt Server Suite only manages the oVirt Node, but the goal is to be able to manage other node types and hypervisors in the future.
ccollaborate is a CMS framework with support for all programming languages. It aims to be easy to use, program, administrate, and understand. The content can be edited both in command line programs (such as vi) and via a Web-based interface. Modules may be reinstantiated. Files may be uploaded via standard methods (such as sftp, scp, and rsync). All programming languages may be used with ccollaborate.