• ConnectedTexturesMod (by tterrag1098)
• OpenBlocks Elevator (by vsngarcia)
• Portal Gun (by iChun)
• Simple Voice Chat (by henkelmax)
• SCP:SL Spawn/Dead Sound addon (by 5UP3R_TH30_B4G)
• SCP: Armour (by hotsoulracer)
• Site-26 SCP Containment Map SCP Lockdown (by ShadowStrike21)
• SCP: Foundation Requisites mod (by egorichofficial)
• FPS Reducer (by bre2el)
• BetterVanillaBuilding (by stefanj2_)
• Traveler's Backpack (by Tiviacz1337)
• Waystones (by BlayTheNinth)
• Better Advancements (by way2muchnoise)
• SCP: Lockdown (by commander_wasp)
• Corpse (by henkelmax)
• BSL Shaders (by capttatsu)
• NetherPortalFix (by BlayTheNinth)
• Morph (by iChun)
• Techguns (by pWn3d_1337)
• Macaw's Bridges (by sketch_macaw)
• SCP +Recipes (by Pder)
• Animated And Emissive: Ice and Fire and Spartan Weaponry (by star_artsy)
• Smooth Font - 32x [1.21] (by apt9002)
• Faithful 32x (by Faithful_Resource_Pack)
• UniLib (by CDAGaming_)
• Avaritia 1.1x (by covers1624)
• Bookshelf (by DarkhaxDev)
• CraftPresence (by CDAGaming_)
• Low On Fire (by Haikis)
• SCP Blocks (by HELL20115)
• SCP Lockdown: Zera's SCPs (by thethirdeye27)
• Just Enough Items (JEI) (by mezz)
• Fresh Animations (by FreshLX)
• Security Craft (by Geforce132)
• LLibrary (by MCModDev)
• AppleSkin (by squeek502)
• SCP Epsilon (by TalonaPlagueFox)
• SCP Site 45 Texture Pack x32 (by director_wood)
• SCP: Lockdown Heavy Containment Zone Expansion (by Scootied)
• CodeChicken Lib 1.8.+ (by covers1624)
• Xaero's Minimap (by xaero96)
• Midnighttigger's Default Connected Textures (by Midnighttigger)
• MrCrayfish's Furniture Mod (Legacy) (by MrCrayfish)
• Custom NPCs Spawner (by Jaredlll08)
• SCP: Lockdown Labels Expansion (by FrostbItNebulae)
• Custom NPCs (by Noppes_)
• Skin Layers 3D (Fabric/Forge) (by tr7zw)
• SCP Lockdown Extras (by fluffydoggoofficial)
• SCP XK Scenario (by FrostbItNebulae)
• iChunUtil (by iChun)
• Chisel (by tterrag1098)
• Patchouli (by Vazkii)
• Dramatic Skys (by thebaum64)
• SCP: Obscurity (by Tac0dile)
• Round Trees (by Motschen)
• Statue (by Gegy)
• Vampirism - Become a vampire! (by maxanier)
• The Twilight Forest (by Benimatic)