According to my judgment of quality
According to fandoms involved
According to pairings represented
Note that the last option does not include all the sites on the list, as many of them don't include pairing-specific art, and others I don't have enough of for any given pairing to include a full list. (A pairing doesn't get its own listing here until I have at least four sites for it to include.)
Before you go to any of these sites, you may want to check out the OFP. It's a site frequently linked to by Japanese artists. Respect it. If you want to ask for permission to use art from a site in icons, here is a polite request in Japanese, written by selphish:
あなたのアートを好き。 アイコンにアートを使っていいですか。 さいけんを施します。 ありがとうございます！
If you get a reply back in Japanese, running it through Babelfish should be enough to determine whether they said yes or no.
There is an exception to this rule, and that is sites with what is called "material," or "sozai." These sites have tiny icons (often made of pixel art), font packs, wallpaper textures, and the like. They are meant for use in other people's sites--although if you use them, you should still link back to the originating site. I will indicate which sites also include material.
Fandoms I keep track of in this post are Naruto, Final Fantasy (indicated as FF or FF# where appropriate), Star Ocean: Till the End of Time (SO3), Fullmetal Alchemist (FMA), Bleach, and D.Gray-man (DGM).
Warnings I use are Y (for yaoi), H (for explicit content), C (for toxic levels of cuteness), and WTF (for sheer bizarrity).
Aidma -- Naruto. There are no words for the sheer cuteness. None. C Direct link not working. However, copy and paste it into your address bar. The cuteness is worth the trouble. Material.
Deep Forest -- FF8, some other FF. The best Squall fanarts I've seen, although I am vaguely bothered by the fact that last time I checked, there was more Seifer fanart. Oh well. There is a lot of Seifer/Squall, but it's clearly labeled, and even most of that is gorgeous. Y
Honeybee Manor -- FFVII, some other FF. Tons of Cloud, Sephiroth, and Vincent art (not to mention a goodly number of arts of the girls), done in a style amazingly like the better official art. The only website I've seen with any quantity of Vincent/Lucrecia arts.
Hanamaru -- Bleach. Lovely RenjiRuki and HitsuHina, as well as great art of other characters as well. H
pairings: Renji/Rukia, Hitsugaya/Hinamori
A2 -- FMA. Probably my favorite Hughes fanart on the whole wide intarweb. She does pretty Havoc, Roy, and Ed arts as well; the only character I don't like her depiction of is Hawkeye, and she even occasionally manages a good one of her. Y, a little H
pairings: Hughes/Mustang, Havoc/Mustang, Ed/Roy, Roy/Riza
Keroyon jima -- Naruto etc. A lot of adorable NaruHina as well as some nice art of others. Besides being cute, the art is excellent--some of the very best in the fandom. C
candy*store -- Naruto, Bleach, etc. One of the most wonderful Naruto fanart sites out there. Full of crack chibis, adorableness, and great art. C, WTF
10-rankai -- Naruto etc. A lot of wonderful Naruto fanart, with some especially good pieces of Sasuke. Y
pairings: Naruto/Sasuke, Kakashi/Sasuke, Sasuke/Sakura
PochinokoPro -- Naruto etc. Some of the best SasuSaku fanarts around.
Celluloid Acme -- Naruto etc. Stuff from here tends to show up on 4chan a lot. Some of it's very weird, but there's a lot of well-drawn and extremely sexy art as well. H, WTF
pairings: Asuma/Kurenai, Temari/Shikamaru, various
Engawaken -- Naruto. Several excellent Sasuke arts and some good NaruSasu. Y
Sackcloth and ashes -- Naruto etc. Some absolutely amazing art. More Gaara than anything else, but also some Itachi art and a bit of other stuff.
Neko Moyou -- FMA. Most adorable Roy/Riza in existence. Also has some great stuff of other characters.
Aluga -- Naruto. Rather artsy and very pretty arts, with a focus on the characters of Team 7.
Senkou-Banrai -- Naruto. Probably the biggest Team Yondaime fanarts site there is--and it has some great art.
Mr. Randomness -- Bleach etc. A number of amazingly well-drawn fanarts, including some beautiful ones of both Ishida and Renji.
UHO -- FMA. A simmering mass of pure cute, mostly Elric-focused. C
gvct -- FMA. This is Aidma's sister site; it has less polished art, but a whole lot of adorable sketches and bits of pixel art. Mostly Roy/Riza and general Roy-pack arts. C
Retonomiyako -- Naruto, DGM. Some incredibly adorable and well-colored art with a focus on the Sound Five on the Naruto side. C
Two in All -- FMA. Just very nice FMA fanarts in general. Material.
Katsushika Dress -- FMA. Really, really nice fanart, very official-looking in style, with a focus on Ed.
Reiko -- FMA. Good Ed-focused arts, although a few too many pinup-ish ones for my preference, but sometimes I think I'm the only person in the fandom who doesn't see Ed as some kind of delicious teenage sex object.
Love Drop:B -- Bleach. Lovely, lovely IchiRuki, as well as some RukiRen and some of Ichigo, Rukia, and Renji alone.
pairings: Ichigo/Rukia, Renji/Rukia, various het
Yuccoshi -- FFVI, some other FF. Absolutely lovely FFVI fanarts.
Lanlingjiujia -- FMA. Exceedingly pretty art, mostly of Roy/Riza, but also some other stuff.
Ougizakura -- Naruto. Lovely, lovely SasuSaku arts (as well as some others). Currently down, but there are plans to get the site back up.
StrayCatFever -- Naruto. Painfully cute Sasuke art, as well as some nice Itachi stuff. Unfortunately also includes a bit too much Kakashi/excessively-young-looking-Sasuke,
Israk -- Naruto, FF, etc. Gorgeous art of Hinata in particular, but also of other characters.
[KETO] -- Bleach. Really lovely Rukia art. Unfortunately not much of it yet, but hopefully there'll be more in the future. H
Kichijitsu -- Naruto etc. Gorgeous art, primarily Uchiha-focused.
grappe -- Naruto. Similarly lovely art, with a focus on Itachi, but other stuff as well.
pororin -- Naruto etc. Very clean, official-looking art, and a lot of it. Clean, of course, refers to the quality of the art, not any lack of porn. Because there's porn. Be careful; some of it treads far too close to loli. H
invivi -- Bleach. Has a very nice collection of fanarts, with a lean towards IchiHime and Ukitake.
pairings: Ichigo/Orihime, Shunsui/Ukitake
Echigoya -- Naruto. Some very good art, especially of Itachi. There seem to be some slashy bits, but nothing major.
U.T.D. -- Naruto etc. Nice art, with an unusual number of Shikamaru and Kiba pictures.
Seiren -- Naruto, Bleach, etc. Some very nice fanarts. The quality of the art varies somewhat, but some is very pretty and definitely worth a look. C
pairings: Shunsui/Nanao, Shikamaru/Temari, Neji/Hinata, Naruto/Hinata
Concrete Girl -- Naruto. Very clean, pretty art with a distinct lean towards Team 10. Mostly dedicated to ShikaIno.
pairings: Shikamaru/Ino, Neji/Tenten, Naruto/Hinata
Area 325 -- Naruto etc. A wide variety of very clean, attractive art. It seems that the site is no longer being updated, but the existing art is still there.
Mad Mush -- Bleach etc. A collection of fairly nice, clean art. Big on the male fan favorites--Renji, Shuuhei, Izuru, and Hitsugaya. There are others as well, though.
Fade to Black -- Naruto. Some nice art with a particular focus on the Sand brothers (not so much Temari, sadly).
Honey Hive -- Naruto etc. A bunch of hot Kakashi pictures and a few images of other characters as well.
Shiro-Usagi -- Naruto. Elegantly drawn art with a focus on Yondaime.
Fakefur -- Naruto, Bleach. Some gorgeous Yondaime art as well as a lot of Izuru images. Y
pairings: Gin/Izuru, Renji/Izuru
Magnet000 -- Naruto, Bleach, etc. Rather hard to navigate, but worthwhile for the quality. Much of it is lineart, but even that's pretty. Very nice Sakura art.
pairings: Sasuke/Sakura, Kakashi/Sakura
Deeva -- FMA, Naruto, etc. Sakura is a little too young-looking in a lot of this art, sometimes badly so, but a lot of it is actually cute. The FMA section also has terrific Roy/Riza art. C
pairings: Roy/Riza, Sasuke/Sakura
Sunny Funny -- Bleach, FMA, FF etc. Some pretty fanart, particularly of Gin and Renji on the Bleach side. The FF section has some good Turk pictures.
Kurumi-Show -- Bleach, FMA etc. Some very attractive art, spread mostly throughout the divisions of the Gotei 13. Y, WTF
pairings: Gin/Izuru, Shunsui/Aizen, Hitsugaya/Hinamori
Hiro -- Naruto. Exceptionally beautiful art with a focus on Itachi, although several other characters are represented as well.
Mangifera indica's Storage -- FF7, Bleach, etc. A small but very striking collection of arts.
Silent Robin -- Naruto etc. Gorgeous art with a particular focus on Naruto and Kakashi.
Testament -- Naruto etc. Some extremely pretty, well-done art. There really should be more.
22 -- Naruto, FF, etc. Gorgeous arts, mainly of Yondaime, with some FFVII thrown in on the side.
avoid -- Naruto etc. Some very pretty art, mostly of Naruto. Beware the KakaNaru and the excess of naked-little-boy-Naruto--but the rest of the art makes up for it. C, Y
pairings: Kakashi/Naruto, Naruto/Sasuke, Naruto/Sakura
Magaru -- Naruto, DGM, etc. Very striking art with exceptionally vivid colors. Not all that much of it, but worth a look for what there is.
C-three -- Naruto etc. Includes some small but very pretty Naruto arts. WTF
sui-sui -- Naruto. Plenty of cuteness, especially of the Yondaime and Naruto variety. Y, WTF, C
pairings: Naruto/Sasuke, Kakashi/Iruka, Neji/Naruto
Nightflight -- FFVII. Some very lovely fanarts. Mostly Cloud, Sephiroth, and Sephiroth/Cloud. Y
AG Biscuit -- FMA. Cute arts, although sadly not that many so far. Hints of Roy/Ed, but nothing explicit.
Zero Area -- FMA, Naruto, etc. Difficult to navigate (the main illustration page is here), but has some nice arts.
Digital Scoop -- Bleach, DGM. Excellent arts, very clean and professional, plus quite a few more sketchy works. Y
pairings: Gin/Izuru, Rabi/Allen, Cross/Komui, various DGM yaoi
Zen -- FMA, DGM. Very pretty arts, despite a distinct Roy/Ed tendency. Y
W-mania -- DGM etc. Rather difficult to navigate, but often worth it.
UN Fanta -- Bleach etc. A number of precious Hitsugaya and Hinamori images. C
Sangria -- Naruto. There's not much art, but what there is can be gorgeous. Primarily Temari. WTF
Ringo -- Naruto. Lots of really gorgeous art of the Fourth, plus some of Jiraiya as well. There are some JiraYon implications, but the actual yaoi is fairly hard to find. Y
Aion Gloom -- Naruto etc. A lot of arts of the boys of Team 8, especially Kiba. Lovely colors. Y
Ozashiki Tsuribori -- FMA etc. Has some of the best Roy/Riza arts I've seen in a while as well as some particularly striking arts of Riza and Winry.
Tessa -- FMA. Some very lovely Roy/Riza and some nice pictures of the individual characters.
Come Closer -- FMA etc. A great source of much cuteness, especially as regards the Elric brothers. C
+/- 0 -- FMA. A selection of very lovely arts, including some of infrequently drawn characters.
Tsubaci -- Bleach, Naruto, etc. Mostly a Samurai Champloo site, it seems, this place also has some very nice arts of other series. Some especially nice Renji arts.
GAMPS -- Naruto etc. Some very nice art of Team 7, with a particular focus on Sasuke. Not much there yet.
Marine Blue -- Naruto etc. Some very cute art with an unusual focus on Team Yondaime.
2co -- Naruto. Mostly a large assortment of interesting and attractive Sasuke images. WTF
Kameyashiki -- FMA. Some very nice Mustang and Havoc art; some Hughes art as well which I don't care for quite as much. They also have a Naruto-centric site, Sannasubi, but that's mostly so-so KakaIru. Y
pairings: Hughes/Mustang, Havoc/Mustang
crazy9 -- FMA etc. One of the few fanart interpretations of Hughes that I really like. Y
nekos -- Bleach. A bunch of good art, primarily of Hanatarou, despite all the crackpairings centered on him. Y
pairings: Renji/Hanatarou, Gin/Izuru, various
16Nights Love Tales -- Naruto, Bleach, etc. Some very cleanly drawn and pretty arts. C
pairings: Naruto/Hinata, various/Hinata
Magnolia -- FMA etc. Lovely arts, particularly of Hawkeye.
Ronronshuka -- Naruto, SO3, etc. Awesome sannin cuteness. And Tsuboobies. H
pairings: Jiraiya/Tsunade, Orochimaru/Tsunade
Uzu-ringo -- Bleach, Naruto, etc. This has much cuteness, as well as some very nice art. C
en-ju -- Naruto, FMA, etc. Very pretty art, if somewhat oddly stylized. Primarily Hinata, Neji, and Kiba.
pairings: Kiba/Hinata, Neji/Hinata
Silent Sea -- FMA, Naruto, etc. Adorableness. Lots of Naruto stuff, some FMA as well. C
Cross and Skull -- Bleach, Naruto. Some very pretty Bleach and Naruto fanart.
Haliack -- Naruto, DGM, etc. Pretty, interesting fanart, although somewhat oddly stylized. Y
KururuDENPA II -- Bleach, Naruto, DGM, etc. Some whacked-out pairings, but a lot of cute stuff, all the same. Lots of Orihime art. Y
pairings: Chad/Orihime, Zangetsu/Ichigo
Love Reach -- Bleach etc. A lot of Ichigo, a lot of Ishida, some of them together, and a few other things, all of it well-drawn. Y
baby* -- Bleach etc. Some very nice pictures of Urahara and Ichigo in particular. Unfortunately, they are together entirely too often... Y
pairings: Urahara/Ichigo, Ichigo/various
Negiko -- Naruto etc. A wellspring of Team 10 cuteness, particularly as regards Shikamaru. Also includes some ShikaTayu crack. C
White Knight's Pearl -- Naruto, FMA, etc. A lot of art, particularly of Shikamaru. The quality varies, but it's all fairly decent.
Rouge Attic -- Naruto etc. Very pretty art, including some quite nice watercolors. An interesting and attractive style. Y, C
pairings: Kakashi/Sasuke, Sasuke/Sakura
Supermanic Soul -- Naruto. Despite an exasperating overabundance of KakaIru, this site has some very nice art, especially of Kakashi. Y
Happy Collection -- Naruto, FMA, etc. An assortment of Team 10 cuteness on the Naruto side as well as some nice FMA art. C
Kuzuya -- Bleach etc. Some pretty art, with a preponderance of Soi Fong.
AZupper -- Bleach etc. Has some of the most well-characterized Rukia art I've seen--her expressions are perfect. The site is currently in the process of remodeling and should be back eventually.
Big Tree -- Naruto, FF, etc. Strangely adorable art. The general site actually has some very cute Harry Potter art; the Naruto-specific site (Sweetness) has a lot of lovely SasuSaku. C
Tomahawk Baiser -- Naruto. Some very cute art, with an emphasis on NaruSasu. C, Y
Hanainu -- Naruto. Pretty art with a focus on Team Gai.
torori -- Naruto etc. The art here is rather too cutesy at times, but some of it's nice. C
plastic trance -- FF7 etc. Some unusually good FFVII fanart. WTF
sugar-less -- FF7 etc. Mostly FFVII art, most of it oekaki-ish, but all of it interesting. Notable for a lot of Turk fanart and a focus on Reno.
pairings: Reno/Elena, various Reno het
Plum tea Maniac -- DGM. Slightly untidy but attractive art. Y
Ebony Birds -- DGM. A small but growing collection of arts. Lots of sketchy Cross. Y
pairings: Cross/Komui, Cross/Allen, Kanda/Allen
Alpha -- DGM. Has a wide selection of arts, including most characters. Notable for some pretty Cross. Y
pairings: Cross/Allen, Rabi/Allen
Sometime -- FMA, Naruto, etc. Some very good art, especially of Team 7 in the Naruto section. Y
Zeolite -- DGM. The quality varies a bit (some images are sketchier than others), but a good DGM fansite in general. Y
pairings: Allen/Kanda, Rabi/Kanda
H+E+Y -- Naruto. Some of the art is sketchy, but it's all fairly good and there's a lot of it.
re:LT -- Naruto. Adorable, pixel-ish art with a lot of Kakashi. C, WTF
7th Heaven -- Naruto etc. Several very artistic-looking pieces; a number of Kakashi fanarts in particular.
Piero -- Naruto etc. Some very pretty art, mostly SasuNaru but a few sketchy arts of other subjects. Y
Yin&Yang -- Naruto, Bleach, etc. A lot of art; the style is rather sketchy, but it's good nonetheless.
shi-ki -- Bleach, DGM, etc. A bunch of excellent art; the Bleach side has a bit of a lean towards GinIzuru. Y
Marge -- DGM. Quite a bit of good (and often cracked) art. Y, WTF
Wicked Smile -- Naruto etc. A lot of art with an unusual amount of the Sand trio, particularly Gaara and Kankurou.
Kuragedan -- Naruto. Some exceedingly cute art of the Fourth Hokage, often with Jiraiya or tiny Kakashi. C
Sacrifer -- Naruto. Best crack-chibis ever of Orochimaru and Anko. Not lacking in other Sound characters as well, plus a few others. There's even a section of photographs of clay dolls done in the style of the chibis. C, WTF
Reimyou -- Naruto. Notably mostly for sheer crack. Mostly KakaSasu, although less pedotastic than most Japanese fanart for the pairing is. Also a bunch of terribly cute pixel-art comics. Y, WTF, C
Moyabo -- FMA. Full of crack (including the horror that is Hohenheim/Ed), but also has some excellent arts. Y, WTF
BPM -- Naruto etc. Some very adorable art of Kakashi in particular. Also has some KakaIru, though. Y, C
Crusade -- Naruto etc. Some cute arts, particularly of Team 10, in a peculiarly One Piece style. Unsurprisingly, also includes One Piece arts. C
M*H -- Naruto etc. Tons of sketchy but interesting arts.
K-flower -- SO3 etc. Huge stash of SO3 hentai if you're into that sort of thing; some non-porn as well. A little hard to navigate, but the art can be quite good. Y, H
CCC -- FMA etc. Rather hard to navigate, but has some nice (if sketchy) arts.
Black Rush 57 -- Naruto. Some very darling arts, especially of Team 7. C
Siosai -- Naruto etc. Much cuteness and silliness, with some special crack reserved for the Akatsuki. C, WTF
seil -- DGM etc. Mostly Allen/Kanda, but lovely arts all the same. Y
Ishiya -- Naruto, Bleach, etc. Some inventive and gorgeous arts, but beware the odd slash. Also be prepared for wackiness if you venture into the hentai section. Y, WTF, H
pairings: Kira/Hinamori, Baki/Hayate, various
Beehive -- Naruto. Mostly KakaIru, but also some cute general art. Y
Samurai Soul -- FMA, Naruto, Bleach, etc. A variety of cute and attractive arts.
Space Drop -- Naruto. Tons of cute art of the Sand siblings, plus some of other characters. Not always the best quality, but worth a look. C
A -- Naruto etc. Mostly Sasuke art, some of it cracked. The navigation seems to be off (in my browser, at least); go here for the Naruto gallery. Y, WTF
Yukimaruya -- Naruto, FF7. Some disturbing pairings, but also some lovely art. There's a particular focus on the Akatsuki. Y
pairings: Sasuke/Naruto, Itachi/Naruto, various Naruto yaoi, various Akatsuki yaoi, various Jenova triplets/each other, various Jenova triplets/Cloud)
Kakuukensetsu -- FMA, Naruto, etc. Lots of small and sketchy but very pretty arts. Material.
pairings: Kakashi/Naruto, Ed/Al
Gyago -- FMA, FF10, etc. Lots of cute Mustang/Hawkeye(/Havoc) art, although beware the Aurikku on the FFX side. C
pairings: Roy/Riza, Roy/Riza/Havoc, Auron/Rikku
Aquair -- FMA. Quite a bit of cuteness and some good art. C
Masakaki -- FMA. A little hard to navigate, but has some very nice art. Beware the Armstrong crack, though. C, WTF
Ootsuji -- FMA. A number of black-and-white images, alternately adorable and touchingly emotional. Hints of Roy/Riza and a lot of tiny Elrics + Winry cuteness. C
INSIDExNOISE -- FMA etc. The website of one of the most popular Roy/Riza doujinshi circles out there. The quality of the art varies, but some of it is lovely.
Contrail -- Naruto etc. Has some really weird-looking art, but also some rather pretty stuff here and there. WTF
pairings: Sasuke/Ino, Kiba/Ino
Pilgrim -- Naruto, Bleach, etc. Not the best of art, but it's certainly quite pretty.
pairings: Sasuke/Sakura, Ishida/Orihime
Black Joke Company -- DGM. Tons of insane comics with a focus on Komui. Y, WTF
pairings: Komui/River, Komui/various
Kisen Spectre -- FMA. Some very nice art with a particular focus on Hughes and Mustang. Y
pairings: Hughes/Mustang, Havoc/Mustang
Kakure Wild -- Naruto. Mostly KakaIru, but there are also some lovely images of the individual characters. Y
Mustela -- Bleach. Lots of pretty art and lots of crack, most of it focused on YoruSoi. H, WTF
pairings: Yoruichi/Soi Fong
Min'Ss -- DGM etc. Much cuteness, particularly of Allen. Y
WORTH A LOOK
Rhythm to Heart -- FMA etc. Your one-stop source for cutesy explicit FMA yuri! H, WTF
pairings: various het and yuri
Child Cat -- Bleach, Naruto, DGM, etc. Aside from...remarkably good tentacle porn, this site also has some regular porn which is actually decent. But it's almost all porn in any case, so tread carefully. H
pairings: tentacles/Hinata, tentacles/Yoruichi, tentacles/Rhode, various
Netkaryu -- Naruto, FMA, etc. Lots of silly cuteness. Y, C, WTF
pairings: Hughes/Mustang, Kakashi/Iruka
Hariya -- Bleach etc. Has a lot of very cute art, particularly of the Karakura Town characters. C, WTF
97 -- Bleach, FMA. A lot of very cute art as well as some prettiness. Lots of HitsuHina. C
Slowcat -- Naruto etc. Some clean, well-drawn art. Definitely on the cutesy side. C
Revia -- Bleach, Naruto, etc. Very nice Rukia art, as well as HitsuHina and other stuff.
pairings: Ichigo/Rukia, Hitsugaya/Hinamori
Benevolence -- FMA, Naruto, etc. The style's kind of weird, but there are some nice arts here.
Raindrop -- Naruto, FMA, etc. The quality of the art here isn't amazing, but the sheer cuteness sometimes makes up for that. C
Coctura -- FMA etc. Some nice arts, especially of Ed and Al; an unusual amount of Izumi as well.
Kimi to iu Hana -- FMA. Some rough sketches, but it's mostly adorable pixel art. C
D.co -- Naruto etc. One of the biggest sources of Naruto pixel icons, including representations of just about every genin pairing in the fandom. They are precious. C
pairings: Kakashi/Iruka, various
032 -- Naruto etc. Another adorable pixel icon site. Tons of KakaIru, though. C, Y
pairings: Kakashi/Iruka, Genma/Hayate, various
viento -- Naruto etc. More adorable pixel icons. Some particularly cute animated ones. C
Momentary Sword -- Naruto, Bleach, FF, etc. An unusual number of FF pixel icons. C
Common Sun -- FMA, Naruto, Bleach, etc. There's some okay art on this site, but the real reason to check it out is for the material. Which is adorable. C
Click here to continue to a list of the above sites organized in different ways.
This post is a work in progress and will be continuously updated as I find more sites and get into new fandoms.
Here are some things you should let me know about:
If you know of another site belonging to one of my fandoms that you think should be included
If I've forgotten to label a site that has material
If I've missed a pairing
If a link is broken
If I've categorized something wrong
Here are some comments I'll ignore:
Accusations of bad taste/poor judgment of quality
Complaints about my opinions on pairings