See Unlisted Videos Youtube Extension Site

Only the creator and specifically invited Google accounts can view the video. It cannot be shared via a public link.

Unlisted videos on YouTube occupy a unique middle ground: they aren't hidden behind an invite-only wall like private videos, yet they won't appear in search results, subscriber feeds, or on a channel’s main video tab. see unlisted videos youtube extension

: For Firefox users, this extension aims to restore old functionality (like the dislike count) while also providing a "quicker method of seeing unlisted videos". It is available on the Firefox Add-ons store . Only the creator and specifically invited Google accounts

An extension cannot hack YouTube’s servers to generate a link to a video that has never been shared. Instead, these extensions work by scraping the web, archival sites, and user-submitted databases to find unlisted links that were previously posted online. : For Firefox users, this extension aims to

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.

: An open-source Chrome extension hosted on GitHub that attempts to list unlisted videos it has indexed.