I'm searching for a browser that meets some specific needs for power users. Here are my requirements:
1. It should support CRX extensions.
2. I need the ability to turn off all security-related restrictions and web security features, like CORS, unsafe-origin handling, HSTS, etc.
3. I want the capability to edit all HTTP headers, including Host and User-Agent from client-side JS.
4. I'd like to treat all unsafe origins as safe origins.
5. The browser should bypass all SSL-related errors and consider insecure HTTPS sites as secure.
6. Finally, I want unlimited browsing history since Chromium limits it to three months.
For additional features, it would be nice to have:
1. Ability to pass challenges from Cloudflare.
2. Developer tools (though this is optional).
3. A separate process for each tab to prevent a single tab crash from affecting the entire browser.
4. Anything else that improves functionality, including browser sync and source code support.
5. WebTCP support would be a bonus.
4 Answers
Well, for a power-user situation, you might need to tweak a regular browser. Most of these security features you mentioned can be adjusted in the about:config settings for Firefox or through flags in Chromium. Although I wonder why you would want to turn off those safety features, since they’re there for a reason!
To be blunt, there aren’t exactly tons of choices when it comes to browsers! Usually, you’ve got your main players like Chrome, Firefox, and Safari. Everything else tends to be just a rebranded version of these.
Honestly, I’m not sure if there’s a browser that exactly fits all of those requirements available publicly. Your best shot might be to use Chromium with certain command line flags and install a history extension to help with that part.
If you dive into the developer tools (especially in Firefox), you should be able to achieve some of these header edits. For your SSL checks and how to deal with history, I think the key is understanding JS and maybe writing a simple extension to tailor your experience.

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