Allo Messaging app from Google powered by machine learning. Announced May 18, 2016. CNET
AMD Radeon RX 560 GPU from AMD. Released May 18, 2017. Website OC3D.net
Deadpool 2 To be released May 18. IMDB
Drupal Free, open-source CMS framework written in PHP. First released May 18, 2000. Website Wikipedia