TwitLonger - TwitLonger is the easy way to post more than 140 characters to Twitter
Writecream - An A.I-powered app for generating blog articles, YouTube videos & podcasts in seconds—using just a product name and description; in addition, you can also use Writecream to generate personalized compliments for cold emails and LinkedIn sales
Privatter - Privatter is the easy way to share long texts and pictures set limit on your followers. You can post them by Sign in with Twitter account to this site.
Ortto - Journeys made simple. Your customer data, messaging and analytics working together.
Twitter text Splitter - Twitter text Splitter is a chrome extension that helps you to publish multiple tweets of your writing or a paragraph on your newsfeed.
5Tweets.com - Type a long tweet and 5Tweets will rewrite it into multiple tweets with a tweet count.