# Apps Apps allow you to extend the user interface of Ergonode - thanks to them you can do more in one place, eventually making handling your data and processes easier. ## What's an App? The App is a small custom web application (microservice) that resolves your business-specific problem. It can generate a CSV file, integrate your data with an external eCommerce system, or even modify the data within Ergonode to i.e. automate some of the data management processes. The App communicates with Ergonode through its public application programming interfaces (APIs) - you don't modify Ergonode code itself but instead provide a separate web application that, together with your Ergonode instance, removes obstacles on your path. Since the App is a standalone application you are not limited to any specific programming language - you can develop it in PHP, Java, Python, JavaScript, and many more. It can be written by yourself, by an agency you work with, or you can use one of the native Apps provided by the Ergonode team itself. ## How can I start with the development of my custom App? Follow this [documentation](/apps2/quick-start.md), or contact one of our trusted partners or your development agency. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.ergonode.com/apps2/apps.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.