XDM Browser Monitor v9+ by subhra74

XDM Browser Monitor connects Firefox to Xtreme Download Manager (XDM), a free, open-source download manager for Windows, macOS and Linux. Downloads, videos and whole pages of links go to XDM instead of Firefox's own downloader.

This add-on works with XDM 9.0 and higher. It needs the XDM desktop app, which is a separate free download:
https://github.com/subhra74/xdm/releases
Using XDM 8 or earlier? Update to the latest XDM first.

WHAT IT DOES
• Takes over downloads: files you download in Firefox go to XDM, which uses several connections at once and can pause and resume them.
• Detects videos: play a video on a web page and it shows up in the toolbar popup with its format and size. One click sends it to XDM.
• Grabs a whole page: right-click → "Download all with XDM…" (or Alt+Shift+D) lists every link, image and media file on the page. Filter by type, size or name, then send the ones you want to XDM in one go.
• Download with XDM: right-click any link or image.

YOUR DATA STAYS ON YOUR COMPUTER
The add-on talks only to the XDM app on your own computer (127.0.0.1). It has no server, no analytics and no tracking. To download a file the way your browser would, XDM needs the file's address, the request headers and the site's cookies. These go to the local XDM app and nowhere else.

Turn browser monitoring off from the popup at any time, and Firefox handles downloads as usual.