Adagio II: Less Than More by Johnie
After the Future by Donna
Anything for You by Arca H
At The Beginning by Devin
Christmas Time is Here Again by hellogoodbye57
The Chosen Ones by crookshanksthe1st
Dana’s Dreamland by Empress Vader
Divido by Kinados
Doom Child series by Neoxphile
Eines Tages by Revilo Witts
The Emilys by Rocketman (Mulder adopts Scully's daughter)
Family Ties and Family Ties II by Nikki
The Final Piece by Empress Vader
Genesis project by aRcaDIaNFall$
Goodwill Towards Men & The Winterlong Series by Neoxphile (Same children in both)
Heirlooms by LaurelSolo
the Help Me series by Ophelia K
Her Father's Eyes by Michelle Kiefer
It's Life: One More Life Ladyhawk
Lilac's Last Bloom by Kate Mulder
Max Files by Empress Vader
Misbegotten Sons by Neoxphile
Mulder's Pot of Gold by Doriane Scott
My Family by Spookster
My Name Is Christmas Carole by Kristen Kilar(just Mulder adopts)
Proof of Love by Cassandra Lange
Quis Si by Trixie
Reflections by Rhondda Lake
Saturday by andreakayy
Summer Weekend Getaway by Scullystar
There's a Way by Andrea
The Time For Miracles by Carol Gritton (just Mulder adopts)
This Fragile Universe by Neoxphile (sort of)
The Third Miracle by Scullyrules5
Up In Flames by Rotem Shahar
Where There's a Will by Andrea
Wrapped in Wind by Rocketman

Doggett and/or Reyes

Beyond The Truth series by Neoxphile (Gibson)
The Family G-Man by Felinefemme and Neoxphile (Gibson)
A Friend In Need by Green Eyed Soul
Goodwill Towards Men & The Winterlong Series by Neoxphile (Same children in both)
Starkweather series - season two by Scully3776 & SpookyKat (Doggett fosters William)
Via Sub Rosa by Scifinerdgrl (Doggett and Reyes foster Gibson)
Via Sub Rosa II: Children of the Via by Scifinerdgrl (Doggett and Reyes foster Gibson & William)
You're My Home by Annie Wright (Gibson)

Other Characters

Maggie Scully

Makeshift Grandson by Neoxphile
Samskara by Susan72869

Skinner

Compromised by AmazonX (m/m slash)
Teenage Girls Series by Xandra (Skinner adopts a niece & nephew)
The White Picket Fences Series by Batela (m/m slash)