Write Brain: AI Writing Assistant is a browser extension distributed through the Chrome Web Store by developer INTERNUITY INTERNET CC. Its purpose is to put a small, consistent set of AI writing commands on top of every editable text field in the browser, so help is always a click away no matter which site you are using.
The extension is deliberately command-driven rather than a full editor. When you are writing a social post, chatting in a forum, drafting an email, or filling in a form, the menu lets you fix grammar, improve the phrasing, make the text more compact, change the tone, translate between languages, or drop in emoji. Each action is applied in place, so there is no copy-paste workflow to manage.
The listing itself is modest in scale, with a small user base and a strong but short review record, and it was last updated in October 2023. It positions itself as an everyday convenience for people who write in many different places on the web and want quick polish without opening another tool.