curl CURL
gd GD
imap IMAP
interbase Interbase
ldap LDAP
mcrypt MCrypt
mhash MHASH
mysql MySQL
odbc ODBC
pgsql PostgreSQL
pspell pspell
recode recode
snmp SNMP
sqlite SQLite
sybase Sybase sybase_ct
tidy tidy
xmlrpc XML-RPC
xsl XSL