# Building the applications
The Joplin source code is hosted on a [monorepo](https://en.wikipedia.org/wiki/Monorepo) and is managed using Yarn workspaces (as well as Lerna for publishing the packages).
The list of the main sub-packages is below:
Package name | Description
--- | ---
app-cli | The CLI application
app-clipper | The web clipper
app-desktop | The desktop application
app-mobile | The mobile application
lib | The core library, shared by all applications. It deals with things like synchronisation, encryption, import/export, database and pretty much all the app business logic
renderer | The Joplin Markdown and HTML renderer
tools | Tools used to build the apps and other tasks
There are also a few forks of existing packages under the "fork-*" name.
## Required dependencies
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