Browser Tamer


Browser Tamer acts as a browser proxy on your machine that catches URLs you click and chooses an appropriate browser or browser profile based on simple rules.

In addition to that, Browser Tamer is:


Just download the latest version, unpack, start. There is no installation process whatsoever.

If you are using - scoop install bt.

Once launched, simply press the “Install” button - that will instruct Windows that Browser Tamer is a browser application. Of course, it’s a fake browser, but we are registering as a browser. How it works is when you open a link and BT is your default browser application, it decides which real browser should actually open it. And to know that, you as a user need to tell Browser Tamer which browser is designed to open which links.


Configuration can be as simple as you want it to be. The most trivial case is trivial:

  1. Select the browser you’re interested in.
  2. Type which links you want to open it this browser.
  3. Press the “Apply” button.


A rule is a single line in the Rules section. It simply says that if an URL contains text you’ve typed in, open the specified browser. It is not case sensitive.

Supported Browsers

Let’s Get Technical


The application is written in Modern C++. Specifically C++20. Why do I say Modern? Because C++ is traditionally is associated with amazing performance, but some think it’s also unsafe. Well, they are wrong!!!!. Especially these days, C++ has evolved, and it’s as safe (or maybe safer) as Java, C#, Go or Rust, without losing it’s cool runtime features.

How It Became a Browser?

It’s not a browser, but when you press “Install” button it registers itself as a browser. That involves writing values to the registry, which are completely removed when you press “Uninstall” button. Here are the locations written to:

More details to follow.

Command Line Arguments


Displays full status i.e. whether it’s installed, default browser, what profiles are available, and rules configured, for instance:

> bt.exe status

Installed: YES!
Default: Microsoft Edge (

1. Mozilla Firefox
    - firefoxy
2. Microsoft Edge (
    - .pdf
3. Microsoft Edge (Work Databricks)
    - hrsystem
4. Microsoft Edge (
    - myoffice
5. Microsoft Edge (Just For Teams)


Installs as browser system-wide.


Uninstalls from the system.


Makes sure there are no instances running anywhere on the system.

Version History


Released 20/01/2022.

General stability improvements.


2.2. Grey Edition

Released 16/01/2022.

General stability improvements.


2.1. Oh Dear!

Released 16/11/2021.

Still called Oh Dear! due to the fact I love ImGui so much. New features:


2.0. Oh Dear!

Released 13/11/2021.

Complete UI rewrite and new features. Due to the fact Microsoft cannot decide on what is the UI framework for programming on Windows, I’ve decided to use a completely independent third-party framework ImGui which is usually used in game development but also good for small utilities like this. It’s super small and super fast.


1.0. Butterfly.

Released 06/09/2021.

Sort of a first release. Why butterfly? It’s not related to anything, just sounds cool. Big Sur. Jaguar. Show Leopard. What the hell?