...a LAMP platform, consisting of Linux+Apache+MySQL+Perl.
Of course, there are plenty of excellent open source variants for any of the pieces of LAMP. Let the L stand for Linux, FreeBSD, NetBSD, OpenBSD, and Darwin/Mac OS X, all of which are open source operating systems and all but the latter have open source GUI layers. Let the M stand for MySQL and PostGreSQL. Let the P stand for PHP, Perl, Python, and Ruby.
Personally I use FreeBSD+Apache+mySQL+Perl.
To my surprise I found 2 perl monger groups. One in Springfield about 70 miles away, and the other in Conway about 120 miles away. Thats better than I would have expected.
Good suggestions derby. Good for me, and good for many others here I am sure.