HDM is a free download manager with built-in video player.

Resources
• Integrated video player
• Material design
• Various themes (light, dark, black)
• Support for Android TV
• Chrome OS support
• Pause and resume downloads
• Browser support
• Simultaneous downloads (default 3)
• Multipart download (maximum 16)
• Download files in the background
• Roaming controls
• User agent control
• Referer Control
• Calculate the hash value (MD5 and SHA-256)
• Power management and battery control
• Various automatic actions after the download finishes

HDM is based on Download Navi:
https://github.com/TachibanaGeneralLaboratories/download-navi