aloneguid/bt 6.0.0 on GitHub

V6 is new, so expect bugs for the next few minor releases. There is no WinGet support yet due to architecture changes (see below).

BT is moving off portable version to make your life easier. From small touches like application icon available in the uninstaller, medium like having a start menu shortcut, to big ones like having BT already registered as a protocol handler during the installation phase. MSI installer also makes sure BT is uninstalled correctly, including all the registry keys it needs to create to register as a system browser.
Configuration is not backward-compatible with previous versions. It's now stored in the correct config location (Roaming home on Windows, and XDG_HOME on Linux). The format has changed from .ini to .yml so it's more expressive and less error-prone. YAML also simplifies underlying C++ code.
Support for UWP browsers is removed. Damn it, UWP is one of the shittiest technologies of all time.
Removed legacy picker invocation options:
- "Always" – there's no use case for this.
- "On rule conflict" – picker is always invoked on rule conflict now.
hit_log.csv is replaced by clicks.csv and includes much more information about browser launches, rule conflicts, and rule hits.

You can add a custom browser not just by path but by type (Chromium or Gecko) as well. This allows specifying data directory for browsers that are not auto-discovered for one or another reason, for instance, portable browsers.
Profiles can be configured to have a custom highlight color. When set, the picker will draw a circle around the icon with the specified color.
Brave Origin Autodiscovery is supported.
Firefox container colors are discovered into highlight color.
Picker maximum width in percentage of monitor space is configurable.
An early version of Browser Tamer is available to install on Debian-compatible Linux x64 distros, use the provided .deb package.
Native Windows ARM build is available.
When rule conflicts are detected, the picker only shows conflicting choices, not the entire browser list.

Slightly redesigned, more ergonomic user interface.
Configuration is saved and restored seamlessly in the background. There is no button to save it or reload anymore. "It just works".
When clicking on the health check button to set the default browser, BT opens the system page already navigated to Browser Tamer, so you don't need to look for it (using OS deep-linking)
Number keys (1-9) in the picker have circular background so it's easier to spot them.

Autodiscovery would detect new Chromium-based browsers, but if the data folder could not be detected, they would be still marked as Chromium with one profile – "Incognito". Now they are detected as "generic".
Process picker would randomly not open at all.