Recently added/updated tools:
Plone is a powerful, flexible, open source Content Management System (CMS) built on top of Zope application server and CMF.
SharePoint is a collaboration and content management server, composed of a suite of tools, that enable administrators and users to co-ordinate processes (which may be useful for project management), store digital objects, and collaborate with other parties. Sharepoint offers a set of APIs and modules that may be used and extended to provide new functionality or tailor existing functionality to bespoke requirements.
Solr is an open source enterprise search platform from the Apache Lucene project. It operates as a standalone full-text search server within an appropriate servlet container, such as Tomcat. Solr uses the Lucene Java search library at its core for full-text indexing and search, and has REST-like HTTP/XML and JSON APIs that make it easy to use from virtually any programming language.
Apache Lucene is a high-performance, full-featured text search engine library written entirely in Java. It is a technology suitable for nearly any application that requires full-text search, especially cross-platform.
ArcExplorer is a custom mapping tool that can be used in a web browser. ArcExplorer allows you to perform a range of basic GIS functions such as display, query and retrieve data.