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.
TwitLonger - TwitLonger is the easy way to post more than 140 characters to Twitter
Chirr App - Chirr App 💬 splits text into tweets and posts it as a thread
5Tweets.com - Type a long tweet and 5Tweets will rewrite it into multiple tweets with a tweet count.
Fusetter - Tweet and hide spoilers! Also can tweet longer!
twtmore - Write a tweet too long? It's way over that dang 140 character limit? Use twtmore.