Logo of Apache Lucene until 2021
<a href="https://en.wikipedia.org/wiki/Apache_Software_Foundation" class="extiw" title="w:Apache Software Foundation">Apache Software Foundation</a>
Vectorised by <a href="//commons.wikimedia.org/wiki/User:Vulphere" class="mw-redirect" title="User:Vulphere">Vulphere</a> based from <a rel="nofollow" class="external free" href="https://www.apache.org/logos/res/lucene/lucene.pdf">https://www.apache.org/logos/res/lucene/lucene.pdf</a>