html-kit was awesome, but i never invested in html-kit tools (the paid for version - which is the only version being developed as of now, IIRC).
for a good, free alternative try netbeans (
www.netbeans.org). it's powerful, intuitive and cross platform compatible, meaning i can create projects on the mac at work, throw them into one of the windows machines here or open them on my linux machine at home without any kind of configuration change.
the next version of netbeans (7) is touted to have html5/css3 syntax highlighting/support and it's highly extensible with addons.
it's also got built in SQL connection and query functionality so you can test your DB queries without needing phpmyadmin or mysql workbench (presuming you're doing mysql / php - i've not tried it with mssql but i can't see why it wouldn't work)
there's also CVS support and ftp too (i believe)
EDIT: oops, i meant netbeans 7 is the next one - i forgot the current version was 6.9 and thought it was 9 instead!