Solr is an enterprise search platform from the Apache Lucene project. Its major features include powerful full-text search, hit highlighting, faceted search, dynamic clustering, database integration, and rich document (e.g. Word and PDF) handling. Solr is highly scalable, providing distributed search and index replication, and it powers the search and navigation features of many of the world's largest internet sites. Solr is written in Java and runs as a standalone full-text search server within a 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. Solr's powerful external configuration allows it to be tailored to almost any type of application without Java coding, and it has an extensive plugin architecture when more advanced customization is required.
OWASP Zed Attack Proxy (ZAP) is an easy-to-use integrated penetration testing tool for finding vulnerabilities in Web applications. It is designed to be used by people with a wide range of security experience and as such is ideal for developers and functional testers who are new to penetration testing as well as being a useful addition to an experienced pen tester's toolbox. ZAP provides automated scanners as well as a set of tools that allow you to find security vulnerabilities manually.
Quoddy is an open source enterprise social network, which shares a common "look and feel" and substantial functionality, with consumer facing social networks like Facebook and Google+, as well as proprietary products from Jive Software and Yammer. It makes up one component of the Fogcutter Suite. It is intended mainly for organizational use and therefore has capabilities which make it uniquely suited to provide the social fabric to support organizational knowledge sharing, knowledge transfer, collaboration, and decision support.
Neddick is part of the Fogcutter suite of tools for building intelligent applications. Neddick provides tools for tagging, ranking, discussing, and discovering various sources of knowledge: Web-links, documents, people, etc. It's over-simplifying a little bit, but think of Neddick as sort of a combination of Reddit, Delicious, and Planet. It also includes a powerful search engine and a recommendations engine, and it lets you categorize, rate, tag, filter, discuss, and discover knowledge in ways that most enterprise search applications can't.
Apache OpenMeetings is a multi-language customizable video-conferencing and collaboration system. It supports audio/video and allows you to see the desktop of any participant. It includes a whiteboard, the ability to import a variety of image formats, invitations, a moderation system, backup and language modules, private and public conference rooms, and the ability to record meetings. The project also provides integrations for Asterisk, Jira, Confluence, Moodle, Sakai, and SugarCRM, and connectors for LDAP and ADS.