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Bugzilla
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<p>Bugzilla is a <a href="/facts/World_Wide_Web/wvnTrWFq">web</a>-based general-purpose <a href="/facts/Bug_tracking_system/xCdIz6Kx">bug tracking system</a> and <a href="/facts/Test_automation/UAVXbSTV">testing tool</a> originally developed and used by the <a href="/facts/Mozilla/FevL9Itn">Mozilla</a> project, and <a href="/facts/Software_license/7enfIqhL">licensed</a> under the <a href="/facts/Mozilla_Public_License/hBuvAz1w">Mozilla Public License</a>. </p><p>Released as <a href="/facts/Open-source_software/HzTaB8E9">open-source software</a> by <a href="/facts/Netscape_Communications/JGWlEUI7">Netscape Communications</a> in 1998, it has been adopted by a variety of organizations for use as a <a href="/facts/Bug_tracking_system/xCdIz6Kx">bug tracking system</a> for both <a href="/facts/Free_and_open-source_software/1cHtjLCB">free and open-source software</a> and <a href="/facts/Proprietary_software/9zcskxYL">proprietary</a> projects and products. Bugzilla is used, among others, by the <a href="/facts/Mozilla_Foundation/Y1xYJsDm">Mozilla Foundation</a>, <a href="/facts/WebKit/YrP9vbIj">WebKit</a>, <a href="/facts/Linux_kernel/dlkduHuA">Linux kernel</a>, <a href="/facts/FreeBSD/RKsFTm7F">FreeBSD</a>, <a href="/facts/KDE/PCh32IWA">KDE</a>, <a href="/facts/Apache_Software_Foundation/Xl9Tt9lE">Apache</a>, <a href="/facts/Eclipse_(software)/YoqHVjas">Eclipse</a> and <a href="/facts/LibreOffice/MInj5kF7">LibreOffice</a>. Red Hat uses it, but is gradually migrating its product to use <a href="/facts/Jira_(software)/7ly5Ty3T">Jira</a>. It is also <a href="/facts/Self-hosting_(compilers)/0Q3F2Buy">self-hosting</a>. </p>