Many thanks to the developers of these programs.
Apache, MySQL, PHP, Perl, ProFTPD, phpMyAdmin, OpenSSL, Freetype, libjpeg, libpng, gdbm, zlib, expat, ming, Sablotron, libxml2, Webalizer, pdf class, ncurses, mod_perl, FreeTDS, gettext, IMAP C-Client, OpenLDAP (client lib), eAccelerator, mcrypt, mhash, SQLite, cURL, ZZIPlib, libxslt, phpSQLiteAdmin, FPDF
In the directory /opt/lampp/licenses you will find all licenses and README files of these programs.