Some Darcy fics...

gen:
All things being equal, I'd rather be in Philadelphia by meinterrupted - Darcy didn't sign on with SHIELD to be a hero. Too bad a group of bank robbers didn't give her a choice.
Textbook Example by brigantine - When Darcy starts working for SHIELD, she finds that every day is a learning experience. / With podfic by miss-marina95 & reena_jenkins

Clint/Darcy:
Cut To Fit by kellifer_fic - When Jane moves into the mansion, she takes Darcy with her. / With podfic by lattice_frames
Frankie Says Relax by kellifer_fic - Where Darcy gets a day job.
Talking Trash and Wasting Time by victoria_p - The one where all the Avengers act like Darcy is a bro and Clint is really bad at flirting.
The best of life is but intoxication by kellifer_fic - Where Steve and Darcy are platonic BFFs and Tony and Clint just aren't buying it. / With podfic by kalakirya
You need a rock not a rolling stone by topaz - The first time Darcy gets kidnapped by a mad scientist, it is not her fault. / With podfic by kalakirya

Bruce/Darcy:
Living a Bangles Song by coffeebuddha - It's just another average Monday morning at SHIELD. / With podfic by AshesandGhost
She blinded me with political science by thingswithteeth - Darcy watched the Avengers defend New York from over two thousand miles away. She could look out her window if she wanted to watch the aftermath. She watches the news instead, and realizes one very important thing: the Avengers have a bit of a PR problem. / With podfic by litra