DHXDownloadManager is used as a central place to collate downloads. Instead of having requests in various parts of your program, it provides a central interface for downloading. It is primarily used for Unity, but future plans are to decouple it where needed.

• Multiple download engines so you're not locked down to a particular library. Supports Unitys WWW class and BestHTTP and is easy to extend to others.
• Saving to file automatically using the relative path in the URL is supported
• A stored list of downloaded files to keep track of what has been downloaded and the state it's in
• Groups of downloaded files to support a grouped state. Useful for download packs.
• Restarting failed downloads on app restart
• Progress callbacks for individual files and groups of files
• Comes with a set of unit tests

// this will save to Application.persistentDataPath/piko_public/Test.png
Manifest manifest = new ManifestFileStream("https://s3.amazonaws.com/piko_public/Test.png", ManifestFileStream.Flags.None);
DownloadManager.AddDownload(manifest);