react-native-document-picker is a popular library for React Native applications that allows users to select documents from their device's file system. This library provides a simple and efficient way to integrate document picking functionality into your mobile applications, making it easy for users to upload files or select documents for various purposes.

While react-native-document-picker is a robust solution, there are several alternatives in the React Native ecosystem that offer similar functionalities. Here are a few noteworthy options:

• expo-document-picker is a part of the Expo SDK, which provides a set of tools and services for building React Native applications. This library allows users to pick documents from their device or cloud storage. If you are already using Expo for your project, expo-document-picker is a convenient choice, as it integrates seamlessly with the Expo ecosystem and requires minimal setup.
• react-native-fs is a file system library for React Native that allows you to read, write, and manage files on the device. While it does not directly provide document picking functionality, it can be used in conjunction with other libraries to handle file operations after a document has been selected. If your application requires extensive file management capabilities, react-native-fs is a powerful tool to consider.
• react-native-image-picker is a library specifically designed for selecting images and videos from the device's library or capturing them using the camera. While it focuses on media files rather than documents, it is a popular choice for applications that require image or video uploads. If your use case involves handling media files, react-native-image-picker is an excellent alternative.

To see how these packages compare, check out the comparison: Comparing expo-document-picker vs react-native-document-picker vs react-native-fs vs react-native-image-picker.