Ganymede is a metadirectory system, primarily intended for UNIX-like environments, but capable of being run with some effort on any server supporting Java 1.1.7 or better. Ganymede supports NIS, DNS, and other network information services, and allows many administrators to work together simultaneously to administer defined subsets of your network directory data. Any system capable of running Java applets with Swing can run the Ganymede client.
YASQL is an open source Oracle command line interface. It features a much kinder user interface than SQL*Plus (sqlplus). This is meant to be a complete replacement for SQL*Plus when dealing with ad hoc queries and general database interfacing. It adds features such as full ReadLine support for command history and tab completion, alternate output methods, table, list, CSV, redirection and piping of query results, query editing, scripting, and easy administrative data dictionary commands.
nexB OpenAssets is a tool for inventorying, managing, and monitoring applications, software, hardware, networks, and generally any IT asset. It is designed so that system administrators, IT, and finance can determine what they have, how it is configured, what it is used for, and how much it is being used, so that informed decisions can be made. It complements existing network management software, integrates with a growing number of protocols and tools, and features no-agent discovery and inventory, configuration management including dependencies and correlation, monitoring, and reporting. It makes extensive and innovative use of XML, Xpath, and Xquery.
check_websites is a very simple virus scanner for Web sites. It checks a document root directory for files with the .js extension and for codewords which might be a hint of defacement or SQL injection. This tool is made to run as a cronjob. There's no output on the screen, but it generates a logfile and mails output.
BitNami MAPPStack is an easy-to-install, ready-to-run binary distribution of Apache, PostgreSQL, and PHP, including the phpPgAdmin tool. It runs in Mac OS X and allows you to quickly setup a development or production Web application environment. BitNami Stacks are easy to install, independent, integrated, and relocatable.