The best alternatives to Affinitweet are Life on Twitter, introduce, and Followerwonk. If these 3 options don't work for you, we've listed a few more alternatives below.
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Universal-2 by AssemblyAI— Speech-to-Text API for conversational data
Want to see who someone tweets about the most? Try Tweetfalcon to see someones top hashtags and user mentions, as well as the top tweets for each of those.