Nico Nico Douga Downloader has been discontinued. Similar apps include yt-dlp, which is free and open source. Other options are JDownloader, youtube-dl, Cobalt Tools and Youtube-DLG. YouTube Downloaders like Nico Nico Douga Downloader are a crowded field, with more than 100 alternatives for Windows, Mac, the web, Linux and Android.
Deturl.com helps you download videos and MP3 music from YouTube, Facebook, Break, MetaCafe, DailyMotion, Vimeo, and many other sites, including adult sites. Deturl is a meta-site that links you directly into many different downloading tools and more.
yt-bat uses yt-dlp to download video or audio from many sites without requiring you to use the command-line.
TubeMaster++ is a powerful tool which can capture multimedia files you are watching or listening from your internet browser (FLV,MP3,MP4). Captured files can be saved directly on your computer or converted to other popular video or audio formats (AVI, MPEG, MP3, MP4, IPod, PSP ..
Replace built-in download manager. When activated, detects the download links to direct links to this add-on and send to Aria2.
China
Offliberty lets you access any online content without a permanent Internet connection. Today many websites offer nice content but most are difficult to browse offline. If you have limited access to the Internet you can use Offliberty to browse any content later - being offline.
VDownloader is a software application that allows you to save videos from any major website to your hard drive. With a single click of the mouse, these videos can be stored in any video or audio file format.
Cyprus
EU
Airy is a YouTube video downloader, i.e. an application that allows you to save your favorite YouTube videos so you can watch them whenever you feel like - no matter whether you are connected to Internet or not and whether it is still available on the web site.
United States
MacYTDL is a macOS GUI/front-end for youtube-dl, the cross-platform video downloader. It runs on any Apple Mac with OS X 10.10 or later.
Download and convert videos online from many websites including Youtube, Vimeo, Facebook, Dailymotion, Instagram, Twitter, Vine, and many more.
xVideoServiceThief (a.k.a xVST) is a tool for downloading your favourite video clips from a lot of video websites (currently supports 93 websites and increasing!).
SpainEU
China
