Keycloak - Open Source Identity and Access Management for modern Applications and Services.
MAMP - MAMP is the abbreviation for Macintosh, Apache, MySQL, and PHP. It is a reliable application with its four components that allows you to access the local PHP server as well as the database server (SQL).
Zentyal - Linux directory, domain, mail, gateway and infrastructure server for SMBs.
Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996
OpenLDAP - OpenLDAP Software is an open source implementation of the Lightweight Directory Access Protocol.
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies