Yes! They vary in the type of user interface, complexity, etc. but they are quite good though most are only for the IPFWADM tool so far. Here is a short list of available tools in alphabetical order. If you know of any others or have any thoughts on which ones are good/bad/ugly, please email David.
John Hardin's IPFWADM Dot file generator - a IPCHAINS version is in the works
Sonny Parlin's fBuilder: From the author of FWCONFIG, this new solution is fully WWW based and offers redundancy options, etc for both IPCHAINS and NetFilter.
William Stearns's Mason - A Build-a-ruleset on-the-fly type system