synctool is a cluster administration tool that keeps configuration files synchronized across all nodes in a cluster. Nodes may be part of a logical group or class, in which case they need a particular subset of configuration files. synctool can restart daemons when needed, if their relevant configuration files have been changed. synctool can also be used to do patch management or other system administrative tasks.
Check_MK is a complex addon for Nagios/Icinga and consists of three subprojects. The check and inventory system Check_MK is a general purpose Nagios plugin for retrieving data. It adopts a new approach for collecting data and obsoletes NRPE, check_by_ssh, NSClient, and check_snmp. It features a significant reduction of CPU use on the Nagios host and automatic inventory of items to be checked, and is especially useful with larger Nagios installations. "MK Livestatus" gives immediate and fast access to live and historic Nagios status data. It's a supported backend for many addons including NagVis, NagiosBP, and Thruk. "Check_MK Multisite" is a feature complete replacement for the Nagios GUI, and uses MK Livestatus as a backend. It is very fast, and supports efficient distributed monitoring.
netconf is a tool designed to replace Debian's ifupdown in a backwards-compatible manner while aiming for maximum extensibility and flexibility. While it can read existing interfaces files and execute hooks in much the same way, it ties in closer with aspects of network configuration that have become more and more important in the past decade: link and location autodetection, including a framework to configure printers, smarthosts, proxies, etc.; zeroconf; wireless LAN configuration; VPN; firewalling; advanced routing and traffic control; and more.
PMS/PyPubSub (short for Python Message Service / Python based Publish Subscribe) is a framework for implementing a publish subscribe mechanism into a Python application. A python process somewhere in the network publishes one or more topics which consist of Python objects. Multiple processes in the network can subscribe to fresh updates of the published topics. A publisher and its subsribers are fully decoupled. The datatype of a topic can be freely defined and changed at runtime. New publishers and subscribers can easily be added at runtime.
Pymailheaders is a small GTK+ program which displays mail headers in your mail box. It is an innovation of xmailheaders, with a few more handy features like new mail highlighting, multi-language support, lauching regardless of network connection status, and auto-reconnecting. IMAP4 and POP3 protocols and XML feeds (including Gmail) are supported.