The system requirements with regards to PHP and Joomla versions are listed on our site.
We support and test with fairly recent versions of the Apache, NginX and Microsoft Internet Information Services (IIS) web servers.
We support and test with the MySQL versions supported by Joomla. Very limited support for PostgreSQL is provided but we do not routinely test with it because of its minuscule share among server technologies across Joomla sites.
With regards to browsers, we strongly advise you to use the latest published version of a major browser such as and in no specific order: Mozilla Firefox, Microsoft Edge, Google Chrome, Safari, Brave, or Opera. Other browsers may work but we cannot test with them. We no longer support Internet Explorer at all.