Astro File Manager is a popular file management app for Android devices. It allows users to browse, manage, and organize files and folders stored on their device[SQ]s internal storage and external SD cards (if present).

Key features often include :

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File browsing and management:

Viewing files in various formats, creating new folders, moving, copying, renaming, deleting, and compressing files.
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Cloud storage integration:

Accessing files from popular cloud services like Google Drive, Dropbox, OneDrive, and Box. (Note: The availability of specific cloud integrations might vary depending on the version of the app.)
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Built-in media player:

Playing audio and video files directly within the app.
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Support for various file types:

Handling a wide range of file formats, not just common ones.
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Root explorer:

Some versions may offer root access features allowing management of system files (use with caution).
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File sharing:

Easy sharing of files via email, Bluetooth, or other methods.

While once a very dominant file manager, Astro has faced some criticism and competition in recent years from other apps that offer similar functionality. However, it still remains a viable option for many Android users.