xdman (download manager)

Xtreme Download Manager is a powerful tool to increase download speed
up-to 500%, save videos from video sharing sites and integration with
ANY browser.

For Browser integration.

Firefox:
https://subhra74.github.io/xdm-firefox/firefox.html

Chrome | Chromium | Opera | Vivaldi:
https://chrome.google.com/webstore/detail/xdm-browser-monitor/bgpkelneombgembocnickiddlbebmica

For other browsers, go to Tools/Browser Integration.

Some features present in Xtreme Download Manager are:

 * Superfast speed;
 * Save video from any website;
 * Supports any browser;
 * Runs on any Operating system;
 * Free, No-Adware and Open source.

Note: p7zip is build-time dependency, not runtime dependency.