XAMPP stands for Cross Platform ,Apache , MariaDB (MySQL) ,PHP ,Perl.
XAMPP is a free and open source cross-platform web server solution stack package developed by Apache Friends, consisting mainly of the Apache HTTP Server, MariaDB database, and interpreters for scripts written in the PHP and Perl programming languages.
LAMP stands for Linux, Apache ,MySQL ,PHP. LAMP is an archetypal model of web service stacks, named as an acronym of the names of its original four open-source components: the Linux operating system, the Apache HTTP Server, the MySQL relational database management system (RDBMS), and the PHP programming language. It is used in linux operating system (Ubantu ,Xubantu) etc.