Twitter API is gone?

Third party twitter apps will be gone or use paid version. Wonder how you guys gonna deal with this new policy? (if you are building something on Twitter) This new move might leave some developers to either abandon their products or pass on the cost to their customers. I will keep use Twitter whether they monetize it or not, as a networking & research tool. But I am also building https://tweetbase.com for Pro Tweeters! I want to know how other builders are preparing for new changes.