・Youtube
Enhancer for YouTube
https://addons.mozilla.org/ja/firefox/addon/enhancer-for-youtube/
SponsorBlock - Skip Sponsorships on YouTube
https://addons.mozilla.org/ja/firefox/addon/sponsorblock/
Audio Equalizer
https://addons.mozilla.org/ja/firefox/addon/audio-equalizer-wext/
Return YouTube Dislike
https://addons.mozilla.org/ja/firefox/addon/return-youtube-dislikes/
YouTube NonStop
https://addons.mozilla.org/ja/firefox/addon/youtube-nonstop/

・SNS
Minimal Theme for Twitter
https://addons.mozilla.org/ja/firefox/addon/minimaltwitter/

・RSS reader & Web Pages Updates Monitors
Feedbro
https://addons.mozilla.org/ja/firefox/addon/feedbroreader/
FeedBro RSS Japanese language（Feedbro日本語化）
https://github.com/ktkr3d/feedbro-locale
https://raw.githubusercontent.com/ktkr3d/feedbro-locale/master/feedbro-locale-ja_JP.json
Update Scanner
https://addons.mozilla.org/ja/firefox/addon/update-scanner/

・Skip to ad page
FastForward
https://addons.mozilla.org/ja/firefox/addon/fastforwardteam/
Skip Redirect
https://addons.mozilla.org/ja/firefox/addon/skip-redirect/
Redirector
https://addons.mozilla.org/ja/firefox/addon/redirector/