> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/xamarin/annotation/namespaces.md).

# Library namespaces

Discover how Apryse SDK's Xamarin.Android and Xamarin.iOS libraries empower you to interact with documents using UI components and programmatically. Learn more about the tools and namespaces available

Apryse SDK contains tools libraries for Xamarin.Android and Xamarin.iOS that allow you to interact with the documents with UI components as well as programatically.

{% tabs %}
{% tab title="Android" %}

## Xamarin.Android library namespaces

Tools library in Xamarin.Android is identical to [tools library in Android](/android/annotation/tools.md).

The package to namespace mapping is:

* `com.pdftron.pdf.tools` to `pdftron.PDF.Tools`
* `com.pdftron.pdf.controls` to `pdftron.PDF.Controls`
* `com.pdftron.pdf.utils` to `pdftron.PDF.Tools.Utils`
* `com.pdftron.pdf.widget` to `pdftron.PDF.Widget`
* `com.pdftron.pdf.dialog` to `pdftron.PDF.Dialog`
* `com.pdftron.pdf.model` to `pdftron.PDF.Model`
* `com.pdftron.pdf.config` to `pdftron.PDF.Config`
  {% endtab %}

{% tab title="iOS" %}

## Xamarin.iOS library namespaces

Tools library in Xamarin.iOS is identical to [tools library in iOS](/xamarin/annotation/tools-overview.md#ios).

* All tools such as `PTPanTool`, `PTFreeHandCreate` etc. are in `pdftron.PDF.Tools` namespace.
* All controls such as `PTAnnotationToolbar`, `PTThumbnailSliderViewController` etc. are in `pdftron.pdf.Controls` namespace.
  {% endtab %}
  {% endtabs %}


---

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