- free and open source
- web server
- solution stack package, consisting mainly of …
- Apache HTTP Server
LAMP is a loosely defined acronym meaning “a solution stack of free, open source software, referring to the first letters of Linux (operating system), Apache HTTP Server, MySQL (database software) and PHP (or sometimes Perl or Python), principal components to build a viable general purpose web server.” (Source: Wikipedia.)
XAMPP is one of various LAMP solution stacks.