MariaDB: MariaDB is a community-developed fork of the MySQL relational database management system intended to remain free under the GNU GPL. Being a fork of a leading open source software system, it is notable for being led by the original developers of MySQL, who forked it due to concerns over its acquisition by Oracle. Contributors are required to share their copyright with the MariaDB Foundation.
Jenkins : udson is a continuous integration (CI) tool written in Java, which runs in a servlet container, such as Apache Tomcat or the GlassFish application server.
When Oracle bought Sun, it declared its intention to trademark the Hudson name, and development began on a commercial version. It was decided by the majority of the development community, including Kawaguchi, to continue the project under the name Jenkinsin early 2011. Oracle maintained that Hudson was continuing development and that Jenkins was a fork; the Jenkins developers considered Hudson to be the fork.
LibreOffice: LibreOffice is a free and open source office suite, developed by The Document Foundation. It was forked from OpenOffice.org in 2010, which was an open-sourced version of the earlier StarOffice. The LibreOffice suite comprises programs for word processing, the creation and editing of spreadsheets, slideshows, diagrams and drawings, working with databases, and composing mathematical formula.