The best alternatives to Happydia are Refined Twitter, Tune by Google, and Behave!. If these 3 options don't work for you, we've listed a few more alternatives below.
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Refined Twitter improves the Twitter experience by removing cruft and adding useful features. Available for Chrome, Firefox, Opera. Some of the best features are: Embedding linked Instagram photos directly in the tweet, syntax highlighting of code blocks, auto-loads new tweets in the stream if you're scrolled to the top, removes promoted tweets.
Tune is an experimental Chrome extension from Google's Jigsaw that lets people customize how much toxicity they want to see in comments. Set the “volume” of conversations on a number of popular platforms including YouTube, Facebook, Twitter, Reddit, and Disqus
A monitoring browser extension for pages acting as bad boys Behave! monitors and warn if a web page performs any of following actions: - DNS Rebinding attacks to Private IPs - Access to Private IPs - Browser based Port Scan
MINIBOOK is a desktop application for browsing the social media websites. It can reduce the distracted elements and encourage users to organize their own information, and it also helps people to get meaningful moments and stay focus on what they want to do.