# Dev: Code Structure

SD.Next is organized as core repo with multiple submodules for different components where each submodule is a separate repository.

## Core repo

Repo: <https://github.com/vladmandic/sdnext>  
The core repo contains the main application code and default UI components

Entire server-side code is written in **Python**.  
UI components are written in **TypeScript**.  

Folders:
- `modules/` - main application code  
  this is core of SD.Next  
- `pipelines` - model pipeline definitions and related code  
  loaders and model-specific code  
- `scripts/` - additional scripts available in the application  
  good place is to add new scripts  
- `ui/` - UI components and related code  
  client-side code for core UI components and StandardUI  
- `extensions-builtin/` - built-in extensions included in the application  
  look here for ModernUI and Kanvas  
- `cli/` - command-line interface tools and api usage examples  
- `configs/` - model configuration files and templates
- `data/` - json data files used for preconfigured items and models
- `models/` - model files and related assets
- `outputs/` - output files generated by the application
- `extensions/` - 3rd party extensions installed by users  
  this is where user-installed extensions are located  
- `test/` - test utilities

## Wiki

Wiki repo contains documentation and guides for developers and users.  

- Repo: <https://github.com/vladmandic/sdnext/wiki>
- Folder: `wiki/`

Wiki is also used to automatically build online documentation: <https://vladmandic.github.io/sdnext-docs/>.

## ModernUI

ModernUI is the default UI for SD.Next.  

- Repo: <https://github.com/binaryQuantumSoul/sdnext-modernui>  
- Folder: `extensions-builtin/sdnext-modernui/`  

## Kanvas

Kanvas is a UI extension that provides a canvas-based interface for image editing and masking.  

- Repo: <https://github.com/vladmandic/sdnext-kanvas>  
- Folder: `extensions-builtin/sdnext-kanvas/`

## Data

Data repo is backend repo that provides data for the application such as 3rd party extension lists.  
It runs fully automated workflows and typically is not cloned locally.  

- Repo: <https://github.com/vladmandic/sd-data>

## Docs

Docs repo is used to build online documentation from wiki content.  
It runs fully automated workflows and typically is not cloned locally.  

- Repo: <https://github.com/vladmandic/sdnext-docs>