There are many organizations engaged in experimental archaeology. The following list provides links to just a few.
EXARC, , the international organization representing archaeological open-air museums, experimental archaeology, ancient technology and interpretation. http://journal.exarc.net/category/experimental-archaeology
University College of Dublin Center for Experimental Archaeology https://www.ucd.ie/archaeology/ceamc/ and Facebook Group for UCD https://www.facebook.com/groups/UCDExperimentalArchaeology
Swietokrzyskie Center of Experimental Archaeology http://dymarki.com/en/home-page/scea/the-swietokrzyskie-center-of-experimental-archaeology,,58.html
Dymarki Center of Experimental Archaeology http://openarchaeology.info/venues/dymarki-centre-experimental-archaeology-pl
Draken Harald Harfagre. A replica viking ship that made a trans-Atlantic voyage in 2016. http://www.drakenexpeditionamerica.com/
Ancient Technology Center http://www.ancienttechnologycentre.co.uk/
Open Arch http://openarch.eu/