The best alternatives to Koo are TweepsBook, nostr, and Twitter Bookmarks Search. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Koo?
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Introducing TweepsBook, an enhanced bookmarking tool for power Twitter users that helps you streamline the clutter by adding different tags and organize tweets based on your liking. With TweepsBook, your time is well spent learning.
Nostr is a protocol built using self-owned account/identities so that it enables us to create 'decentralized' social networks and even other types of solutions.
Rybun is an alternative to Twitter, microblogging social network. You can stay updated with what's happening and share your thoughts in up to 300 characters.
Koo is a Personal Updates and Opinion sharing micro-blogging platform. Discussions are around interesting topics. It empowers people to express their thoughts in Indian languages with a strong knit local Indian community.