Farscape fic recs can be found at Polyamorous Recs, Bright Shiny Objects, and here and uncharted_tales. Also CrackVan.

Leviathan is the primary archive, and it carries slash, het, and gen. Writers I recommend one can find there are: Thea, Feldman, Fialka, Maayan, KodiakkeMax, Deneba, Kixxa, Huzzlewhat, David Hearne... oy. Too many to name. There's more than a little good fic out there.

There is not as much Aeryn/Chiana or Jool/Chiana as one would think, but it is out there. thassalia would know where a lot of the newer stuff is. Also, farscape_weekly has links to new fic as well.