ApexKB (formerly Jumper 2.0), is an open source web application script for collaborative search and knowledge management powered by a shared enterprise bookmarking engine that is a fork of KnowledgebasePublisher. It was publicly announced on 29 September 2008. A stable version of Jumper (version 184.108.40.206) was publicly released under the GNU General Public License and made available on Sourceforge on 26 March 2009 as a free software download.
Jumper is Enterprise 2.0 software that empowers users to compile and share collaborative bookmarks by crowdsourcing their knowledge, experience and insights using knowledge tags. Users tag, link, and rate structured data and unstructured data sources, including relational databases, flat file databases, medical imaging, content management systems, and any network file system. It is an interactive, user-submitted recommendation engine which uses peer and social-networking principles to reference any information located in distributed storage devices, either inside or outside the firewall, and capture the collective knowledge about that content, media, or data.