Pretty Damn Quick (PDQ) analytically solves queueing network models of computer and manufacturing systems, data networks, etc., written in conventional programming languages. Generic or customized reports of predicted performance measures are output.
openlsm - Web based open source, Linux Server Management(LSM) -LAMP ,FTP,Jabber, Samba,NFS,LDAP and MySQL based virtual hosting, Squid,Backup,Quota,Mail ,spam-assassin, mailable,Asterisk, web hosting, Load balancing, nagios and ganglia monitoring.
Framework for making Windows applications that are one .exe file in AutoHotKey_L,C++,C#, VB.NET,Java,Groovy,Common Lisp,Nemerle,Ruby,Python,PHP,Lua,Tcl,Perl,Jint,S#,WSH VBScript,HTML/JavaScript/CSS,COM, PowerShell without compiling . For .NET 4.
DataSync Suite is an open source platform for integrating tools like Zimbra, SugarCRM, and Drupal. The tool is focused on a single sign-on, application data integration, and fast, flexible deployment.
yalimon (Yet another linux monitoring tool) is a python script that runs as a cron job, gathers data from several commands, stores it in a database and then creates graphs out of it. A web interface is used to view the images and to manage the module
Nagcen - NagiosCenter seperatet.NagiosCenter is a centralized viewer to show data of several (more than one) nagiosserver spreaded in different networks. It uses therefore a parser in python and also an php Mysql webfrontend.