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Library System

rwtrcsc

Build several packages from one codebase: list, install, remove and publish libraries from an editor menu or MCP.

Checkpoint System

rwtrcsc

Place and manage checkpoints in your s&box game with a built-in editor tool.

Grass Tool

Red Snail

A powerful grass tool for S&box!

SubHierarchy

SubZero Studios

Useful tools for the Scene Hierarchy

Humanoid Rigger

chomnr

A humanoid auto-rigging editor tool for s&box.

Humanoid Retargeter

chomnr

Retarget animations from 19+ humanoid presets, including Mixamo, ActorCore, Mannequin, Cascadeur, and more!

Humanoid Mocap

chomnr

Turn any video into game-ready s&box animation. Full-body and first-person hand mocap, on your own PC, with FBX export.

Geppetto

pooh

Two editor tools in one package: Effigy (parametric CAD, sculpt, skinned vmdl export) and Marionette (control-rig animat...

Import Unity Package

Grubs

Import .unitypackage to sbox

Water Tool

Red Snail

A fully complete water library including GPU compute shaders, underwater post processing and more!

s&box Editor Collaboration (EXP)

Cyn

Host a session, share a code, and edit the same project with a friend in real time, directly in the editor.

Text to Animation

chomnr

Type a prompt, get an animation. Text-to-motion for any skeleton (humans, animals, creatures)

HotCode

chrinteractive

A code editor built right into s&box: autocomplete, go to definition, live errors and hotload as you type.

Hierarchy Extension

Trashpanda Games

Lock objects out of scene view clicks from the Hierarchy, drag-select only what's fully inside, and outline what's selec...

Weapon Importer

chomnr

Import any rigged gun (FBX/glTF) into s&box: auto grips, first/third-person viewmodel, animgraph, aiming, reloads and p...

Humanoid Hand Retargeter

chomnr

Retarget hand and arm animations to custom FPS rigs with automatic mapping, weapon AnimGraph setup.

Claude bridge

sboxskinsgg

Connects Claude AI to your s&box editor in real-time. Describe what you want and it creates. Game Dev is open for all...

Hierarchy Changes

yugi

colour code and text formatting in scene hierarchy

Property Finder

yugi

ctrl+f search for component properties

sbox-mcp-plus

kitsupanic

Extra MCP tools for the s&box editor — scene tab switching, correct editor status, and UI-safe screenshots. Drop-in li...

Image to Material

Sturnus

Tool for converting images to materials in bulk.

FXBox

Witch Cat

Create custom reusable particle systems and control their parameters from the editor or code!

Terrain Lines

Grubs

Easily create slopes on terrain with lines