Blackmagic makes using Twitter 10x better. It not only has great analytic features to monitor your tweet's performance, it also give you ways to keep in touch with your favorite people on Twitter like a CRM. You can bookmark tweets from them and follow up.
When I share my stories, I want to know which one resonates with more people, so I can track and adjust my content strategy based on that. I also bookmark my own Build in Public tweets to write long-form retrospectives.