pyNMS is a set of Python modules for network management, network testing, systems management, and general use. It contains a nearly complete implementation of SNMPv2c, a SMI/MIB package, and a MIB "compiler". There are many others, such as a telnet/console access class, XML tools, an IPv4 class, etc. There is, unfortunately, little documentation, and not everything works properly yet, but they work well enough to be useful for many things.
Hiveconf is a system for storing configuration data in key-value pairs. It works in a manner similiar to the Windows registry and GConf. Configuration data can be retrieved and modified using a simple API, and data is stored using different backends. The default backend uses a text file format that is similiar to smb.conf or Windows .INI files.
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.
pywrat (Python Wrappers for Remote Access Tools) is a set of wrappers that can be used for accessing remote hosts. They use ssh and scp for remote shell and file system access and can be used as a generalized access method with a single configuration file for all host, user, and key setups. The wrappers are intended to simplify remote access in shell scripts, but it is also possible to use the wrapper modules directly from Python programs.
Cimbiote allows writing and running CIM providers written in Python. It is intended to make CIM development more accessible to developers. A good analogy is that Cimbiote is to CIM as mod_python is to Apache. Plugins are distributed as separate RPMs. Incoming CIM requests are routed through Cimbiote to the appropriate plugins and back into Cimbiote, allowing CIM plugins to be written without any C or C++ code, and, more importantly, without vast knowledge of CIM. Cimbiote plugins register MOF files like any other CIM provider, and are fully accessible over standard CIM tools like wbemxec and wbemcli.
Cobbler is a network installation and update server. It can be used to automatically set up PXE, install virtual guests, manage answer files, and reinstall existing Linux machines. Advanced features include importing distributions from DVDs and rsync mirrors, kickstart templating, integrated yum mirroring (integrated with the installer to make updates available at install time), creation of netboot ISOs, and built-in DHCP/DNS Management. Tools such as "cobbler triggers", a Python API, and an XMLRPC API allow integration with cobbler with the rest of your datacenter environment or other systems management applications. There is also a Web interface to simplify management of the install server. Cobbler supports RHEL 4+, Fedora, and derivative distributions, and is also able to install other popular distributions.