Fan-made Games:
Monika Afterstory Version 0.3.2 (standalone act 3 with fanmade extras) - https://mega.nz/#F!RHISXZ4A!bAxQUJtsk1INxur9q2opuQ
Afterstory Github: https://github.com/Backdash/MonikaModDev
Afterstory Website: http://www.monikaafterstory.com/
Natsuki Sidestory: https://mega.nz/#!fdUlRCCD!YqBvQhUnot-rLDnNeS2Pr1jVtpq7CWhmt25eoxWqVN8
Poll for a new side story: https://docs.google.com/forms/d/e/1FAIpQLSe5CVPK0cRDF3IbhpPJ9DDmlqP6HAnTTQSNsVOOXittpPvBqA/viewform
Solistor's New Story Github: https://github.com/Solistor/NewStory

Fanfiction Writers:
NullCase's Pastebin: https://pastebin.com/u/NullCase
Reflection's Doki Fanfics: https://www.dropbox.com/s/56ct5jwqyj2mfa4/Relink%20Page.docx?dl=0
Rockatansky's Pastebin: https://pastebin.com/u/Rockatansky

Monika Fanfiction::
Monika Pornogram #1: https://pastebin.com/hBCF0Svn
Futa Monika x You by Anonymous: https://pastebin.com/4nDyeA2X
Untitled Monologue by Anonymous: https://pastebin.com/55weHNqG
Power Abuse by Monika (Written by Anonymous): https://pastebin.com/DVrpTYuP
Dear Monika by Anonymous: https://pastebin.com/BtaxcPC1
Dear Monika by Cleveland Rock (Anonymous who wrote the Dear Monika poems): https://www.fanfiction.net/s/12695374/1/Dear-Monika
Texting with Monika by Anonymous: https://pastebin.com/8SaizQLE
Existential Crisis by Anonymous: https://pastebin.com/HBG2ph3W
Monika Date written by Anonymous: https://pastebin.com/97LPswfs
Confrontation with Monika by Anonymous: https://pastebin.com/czRKWtvM

Sayori Fanfiction:
Fantasize 1 (Sayori): https://pastebin.com/72kmdzN1
Sayori Fanfic (First Draft) by Anonymous: https://pastebin.com/7dthf9JG
Sayori Fanfic (Corrected Draft) by the same Anonymous as above: https://pastebin.com/8G3ye7Ug
Sayori's Last Poem by Anonymous: https://pastebin.com/Zrgx55pc
Ice Cream with Sayori by Anonymous: https://pastebin.com/4LHGr1Jy
Sayori Afterstory by Anonymous: https://pastebin.com/t6uj5SNz
Sayo-nara by Anonymous (Fictional necrophilia): https://pastebin.com/uCQV2JKj

Yuri Fanfiction:
Fantasize 2 (Yuri): https://pastebin.com/BrNNKwG6
Yuri Story #1: https://pastebin.com/ci5SfBTJ
Yuri Story #2: https://pastebin.com/pFZaNxQD
Vampire: https://pastebin.com/Nxen9JzU
Deviant Tendencies: https://pastebin.com/T3Mjmb0y
Weekend with Yuri by Anonymous: https://pastebin.com/bn3G3Ekk
Raven by Anonymous: https://pastebin.com/vHCyTf1W
Healing with Yuri by Anonymous: https://pastebin.com/kqyTygNs
Yuri Joins the Literature Club: https://pastebin.com/fLxL4RfX

Natsuki Fanfiction:
Natsuki Fanfic 1/3 (Lewd): https://docs.google.com/document/d/1eS-WaRnMSQVJwoUSF1fj_88ufFyGXHm6hScpzA6qbLw/edit
Date with Natsuki by Anonymous: https://pastebin.com/uYKS2iru
Natsuki and the Friendly Ghost by Anonymous: https://pastebin.com/zG7Ge4YF
Empty Holes by Natsuki (Written by Anonymous): https://pastebin.com/YnmbLauR
Dirty Deeds (Natsuki, features bribes and blackmailing): https://pastebin.com/cAsWC1LN
Bunny Trap by Anonymous: https://pastebin.com/AikrW3xP
Bunny Trap End by Anonymous: https://pastebin.com/2T8rwBHB
A (different) Date with Natsuki (A bit gorey in the second half): https://www.dropbox.com/s/xq7ve1b0qh932j1/Natsuki.docx?dl=0
Baking cupcakes by Anonymous: https://pastebin.com/UzM80YF2
Natsuki's Special Assignment by Anonymous: https://pastebin.com/KZuH48hW
Natsuki as Trapsuki by Anonymous: https://pastebin.com/Vmb7DLWS
Manga with Natsuki by Aokaze: https://pastebin.com/gKxBMx52

Yuri x Natsuki:
Yuri x Natsuki: Foreplay (1/2): https://pastebin.com/m7sJLXPY
Yuri x Natsuki: Becoming (2/2): https://pastebin.com/jS17T9k0

Various Characters:
Doki Doki Literature Club Alternative: Act 1 by Strv103: https://pastebin.com/j5X1VdJk
Doki Doki by Anonymous: https://www.dropbox.com/s/kchw4tntvc11qly/Doki%20Doki.docx?dl=0
Sayori by Reflection: https://www.dropbox.com/s/7mxk1gzzosgzvhg/Sayori.docx?dl=0
Unfinished Something by Anonymous (expires on 10/22/2017) : https://pastebin.com/rVxxE6ks

Art:
Monika Drawfag Album: https://imgur.com/a/JstlI
Yuri Lewd: https://i.imgur.com/O3gyQqW.png
Natsuki Lewd: https://i.imgur.com/fRqTJfp.png
Sayori Lewd: https://i.imgur.com/tZdeIMu.jpg
Poems pasted on Doki Doki Literature Club characters: https://imgur.com/a/UqPUJ
Sayori Lewds by Anonymous: https://imgur.com/a/lEovb
Yuri Lewds by Anonymous: https://imgur.com/a/ba3Vu

Artists:
Anonymous who drew the 2 lewds above: https://lovesicepick.tumblr.com/
Diceroll Designs: http://diceroll-designs.tumblr.com/

Video Edits:
Literature Office 1 (Done by Phisnom#1146 in the Discord): https://streamable.com/e4yl2
Literature Office 2 (Done by Phisnom#1146 in the Discord): https://streamable.com/h80o1
Doki Doki Literature Club in a Nutshell by Anonymous No.192463570 : https://streamable.com/03cl7

Music:
Your Reality Piano Sheet (Transcribed by ost#4058 on Discord): https://mega.nz/#!puABwYQQ!DaR0mwZgGu8UiKlERG9VJb41bLMyPtWSsMiX0ak0thI

Miscellaneous
Fan-made ARG: https://docs.google.com/document/d/10dSxAaDsNBi1rMwnueC6S-x_1uCsr7mXcvjTvKdMjtY/edit

Will update as I see more. If there's anything I'm missing, tell me in the thread. Thanks! If you want me to remove any of the links, tell me to in the thread too.