A Girl Like That by Tarigwaemir.
Howl/Sophie
Super. Pre or early movie, very short, excellent. Trust me, you'll love it.

Never a Dull Moment by Manga Mazoku.
Howl/Sophie
Four parts, post-series. The girl wanted to do something a little stronger than most of the stuff under DWJ on ff.net and...hmm, well it does that, and it's fun, but you might be distracted by a few common errors and stuff... I mean, the writing is good, but you can tell it's being improved as she goes. Looks like it'll be updated fairly frequently, too.

Happily Ever After Takes Some Time by Lightning Bug.
Howl/Sophie
XD One shot, cute, just fluff. Post-movie/book/whatever. I find a lot of the authors combine both.

Still Life with Imperfect Husband by The S.
Howl/Sophie
Post-whatever, cute, a little bit of development/plot/whatever. Well, you'll like it. ^^ Cute.

A Woman True & Fair by The S.
Howl/Sophie
This is my favourite of all the Howl stuff I've been looking up so far. It's the book re-done from Howl's perspective and is -lovely-. He can be a total shallow -ass- one minute and the next he's just -lovely- and...sooooo Howl. Fantastic. Fifteen parts so far, more soon by the looks of it. *_* So, so GOOD. Trust me, it picks up on all sorts of things and you'll have a great time.

The Universal Language by Mimea.
[Howl/Sophie]

30 themes, and as far as I can tell the chapters do not flow into each other. Sometimes it's one idea in chapter A and a slightly different take on a later part of that in B, or... well, it's neat, fun. Very smooth.

Rythm by bangles.
[Howl/Sophie]

Very short drabble, post-movie. Can't remember if I posted this last time and have yet to update the site (BAD! BAD MK! I'm normally so good about that!) but you'll love this. Really, 60 seconds of your time for Howl-love. XD

A Series of Complaints and Virtues by Theyellowvespa [Howl/Sophie]
This is exactly how I pictured these two to be after the book/movie. The movie ends with that uber-goofy shot of them on the balcony, but I think this suits much, much better. I really want more fic just like this!

Once Upon a Time... by sake_butterfly [Howl/Sophie]
Ahhh, this was kind of a funny, short interlude post-book/movie that you can enjoy. It's just kind of...nice. Nice and there and Howl is just enough him to make you happy.

Benedictus by Kittu9 [Howl/Sophie]
A very cute post-story look at Christmas with Sophie and Howl. It's completely ordinary in it's complete lack of ordinary and hillarious in the way Howl and Sophie clash but work so well together. Very cute.

In Which many Loose Ends are Gathered Together by Musewhipped [Howl/Sophie]
She would never admit it in a million years, but Sophie would, if necessary, endure dust, spiders and perhaps even green slime for the sake of the dazzling smiles Howl now fired at her several times a day, usually as he posed artfully in a doorway or on his knees for her. He was quite impossible, and the smiles were, if possible, even more devastating now that Howl had his heart back - which Howl was not going to know, now or ever, if Sophie had anything to say about it.

Chrestomanci

Modus Vivendi [Cat/Tonino]
Do you know how long I've been waiting for non-hmc DWJ fics? A long while. This is a fantastic piece from the Chrestomanci-series, Tonino's perspective but tying in to other characters and little bits from the books. Er, and I mean Cat as in Eric Chant, not Cat as in say, a boss-cat. >_> Sort of. Anyways! It's lovely and funny and has all these little elements you expect from something Wynne-Jonesy but also some stuff that is absolutely lovely but that you would not see in the books. Fantastic!