Open Tweet Filter is a tool for filtering tweets and messages from your Twitter account. With it, you can quickly filter out all the tweets that you don't want to see, while keeping the ones you do. The app is very easy to use and you don't have to worry about sending a notification or anything else.

The interface of the extension is very intuitive and it can be integrated in your browser like a real extension. You don't need to do anything else to use it. You can change the filter criteria anytime, and you can disable the extension’s functionality by simply clicking on its icon.

It's completely free and open source.