Aye (https://okaapps.com/product/6760281977) is a Chromium-based web browser with a built-in AI assistant, capable of analyzing a page and planning and executing actions.

Classic browser features: tabs, favorites, profiles, temporary sessions, history, ad blocking, and anti-tracking enabled by default.

The wizard summarizes and translates a page on demand, responds to instructions on its content (built-in AI model works natively without an API).
A library of 23 ready-to-use skills covers downloading videos and media (X, Telegram, Reddit, Instagram), replying proposals to unread emails, moderating comments and filtering spam on networks (X and Chinese networks), or turning an article into a draft for various Chinese publication platforms (Zhihu, WeChat, CSDN).
Skills can be saved, edited, or scheduled to run automatically.

In automatic mode, sensitive steps (login, CAPTCHA, form submission, payment) remain subject to manual validation.

Note: some of the skills (downloading videos and third-party media, for example) touch on grey areas in terms of the terms of use of the platforms concerned.

Free, no account, no API key required (but possibility to connect your own template provider). Seems unlimited.