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

# Overview

You can choose from the following integration options

* [Gateway](/developer/guides/gateway.md): Customizable checkout form for all use cases
* [Payrexx Tools](https://help.payrexx.com/account/tools): Ready-to-use payment tools designed for specific needs

## Integration - Gateway

### Use an existing Gateway

For certain e-commerce tools, business software or content management systems, we provide ready-to-use integrations. Check here to find out if a solution for your specific application already exists:

{% embed url="<https://help.payrexx.com/integration>" %}

### Build your own Gateway

Find out everything you need to realise your very own custom integration.

{% content-ref url="/pages/-McyibybUyD3IBUBkelB" %}
[Accept Payment](/developer/guides/gateway.md)
{% endcontent-ref %}

You can embed your Gateway in **mobile JS apps**, **custom websites** and **shops** etc.\
Here we show you all options and how it works.

{% content-ref url="/pages/-MgGcGkUqucB2a6vWc\_E" %}
[Embedding](/developer/guides/embedding.md)
{% endcontent-ref %}

## Integration - Payrexx Tools

Payrexx offers a variety of different tools. No development skills are needed to use these.\
Find all tools and their features in our merchant documentation.

{% embed url="<https://docs.payrexx.com/merchant/payrexx-administration/tools>" fullWidth="false" %}

There are multiple options embedding the Payrexx tools. Find out more.

{% content-ref url="/pages/-MgGcGkUqucB2a6vWc\_E" %}
[Embedding](/developer/guides/embedding.md)
{% endcontent-ref %}