Line Mode Browser has some features that have not been found anywhere else. (In some cases, old version of Firefox can be hacked to support a few of them, such as that URLs entered by the user are treated as relative to the current document; Lynx doesn't do that. But, there are also such things as the ability to pipe the output to another program, directly invoking HTTP methods, display a numbered list of links in the current document (also should be easy to do in most web browsers by adding an extension), direct cache management, etc.) I would rather avoid many of the features that Firefox and Chrome have, including CSS, JavaScripts (although JavaScript codes entered by the end user can be useful for the purpose of querying JSON data returned by the server, because such a situation is common enough to be worth), favicons, HSTS, etc, but include some features such as TLS 1.3. Some features that would be useful, I don't see anywhere, such as displaying a table of contents menu based on the <h1> etc in the HTML, commands to sort tables, saving form data to the local disk and later recalling it, calling external programs to edit text, etc. However, they just put too much stuff and make it more complicated than it should be, and many of the actual useful features are omitted. I don't want inline pictures, videos, etc either. However, some of the web developer tools can be useful, because e.g. you can display a list of the network requests.