**UPDATE: App users and developers affected by this change please comment or share. I will add your opinions to this page. 影響を受けた方はコメントやシェアをお願いします。もらった意見をこのページに掲載します。

**UPDATE2: When signing, you will be asked to provide your address to ensure that your signature is legitimate. 署名をする際に住所の入力を求められるのは署名が正当なものであることを確認するためです。

In the first half of January of this year, Twitter secretly shut down many third-party clients that had been dedicated to Twitter.

As a result, a large number of app users and app developers are facing difficulties.

They have been following Twitter's rules for over a decade. Also, this action was done without any prior announcement.

Twitter should stop killing 3rd party clients immediately and take a more constructive approach to this major change.

This is just the beginning. Not only client applications, but also all applications that use the Twitter API could be banned. Please help us keep Twitter a transparent and active place by signing or sharing the petition.

2023/01/13 Affected apps https://docs.google.com/spreadsheets/d/1O27Co27g2fWRon7gK79R8e4th6Xtort3bm289_2jhjQ/htmlview

2023/01/13 Third-party Twitter apps are facing issues, users say https://techcrunch.com/2023/01/12/third-party-twitter-apps-tweetbot-twitterrific-echofon-down/

2023/01/16 Twitter’s third-party client issue is seemingly a deliberate suspension https://techcrunch.com/2023/01/16/twitters-third-party-client-issue-is-seemingly-a-deliberate-suspension/

2023/01/17 Twitter admits it’s breaking third-party apps, cites ‘long-standing API rules’ https://www.engadget.com/twitter-third-party-app-developers-api-rules-193013123.html

2023/01/20 Twitter officially bans third-party clients after cutting off prominent devs https://techcrunch.com/2023/01/19/twitter-officially-bans-third-party-clients-after-cutting-off-prominent-devs/

2023/01/20 Twitter、「開発者契約」を密かに改定し、公式にサードパーティアプリを禁止 https://www.itmedia.co.jp/news/articles/2301/20/news101.html

2023/01/20 Twitterがあらゆるサードパーティー製アプリを許可しないことを公式発表 https://gigazine.net/news/20230120-twitter-bans-third-party-clients-developer-rules/