Expires Module
Raise FD_SETSIZE to 16384 (System Wide)
Prevent Users from reading other webroots
Frontpage Module
Gzip Module (experimental) (Version 1.3.26.1a)
Raise HARD_SERVER_LIMIT
Perl Module (not required to run .cgi scripts/not compatible with php) (Version 1.29)
Php Module

Version 4.3.11
Version 4.4.2
Version 4.4.3
Version 4.4.4
Version 4.4.5
Version 4.4.6
Version 4.4.7
Version 5.0.4
Version 5.0.5
Version 5.1.2
Version 5.1.4
Version 5.1.6
Version 5.2.0
Version 5.2.1
Version 5.2.2
Version 5.2.3
Bc Math
Calendar Support
Curl (Version 7.15.3)
Curl SSL Support (Version 2.8.28)
Dom XSLT
Exif
Flash
FTP
GD (Version 2.0.15)
GetText
Iconv (experimental)
Imap Module (Version 2004g)
Java (must already be installed, or install will fail)
Mb String
Mcrypt (Version 2.5.7)
Memory Limit (experimental)
Mhash (Version 0.8.18)
Ming Support (Not Recommended due to various problems) (Version 0.3beta1)
Magic Quotes
MM Session Module (Version 1.3.1)
Mysql Module
SNMP
Openssl Support
Discard Path
PDFlib (requires license for commerical use; see www.pdflib.com/pdffiles/PDFlib-Lite-license.pdf)
Pear
Postgresql (will break 7.2.x or earlier, please make sure you have 7.3.x or later installed)
Pspell Module
Sablot XSLT [may cause problems with chili!asp]
SafeMode
Sockets
Use System Mysql
Track Vars
Freetype Support
Versioning
WDDX
XML RPC
Zip
Zlib

PHP suEXEC Support
Report Build Errors to cPanel
Reset Apache Config to Default (last resort)
Rewrite Module
Skip Apache Build if up to date
SSL Module (Version 2.8.28)
suEXEC Module
Verbose Build (show configure and gcc output)