5
I've been using
MEPIS, which is based on Debian, for several months. You can download the free .iso, from which you burn a Live CD. You can boot and run MEPIS from the CD, and if it works on your computer, you can install it on your hard drive.
The latest version 3.3.1 of MEPIS has Apache preinstalled, but I had already been using
XAMPP (Apache+MySQL+PHP+Perl+etc), so I've stuck with the latter for now.
On MEPIS, I use Kate for editing PHP files and templates, gFTP for FTP, ssh for shell access. OpenOffice has an HTML editor, but I don't use that. Gimp is a full-featured image editor.
There are 1000s of other applications you can install from the Debian repositories.
The best support site for MEPIS is
mepislovers.org, which uses XOOPS, and is run by CBlue.