public/Get-DefaultBrowser.ps1

function Get-DefaultBrowser {
    <#
    .SYNOPSIS
        Returns default browser for current user
    .DESCRIPTION
        Returns default browser for current user
    .PARAMETER (none)
    .EXAMPLE
        Get-DefaultBrowser
        Example return: "Edge"
    .LINK
        https://github.com/Skatterbrainz/helium/blob/master/docs/Get-DefaultBrowser.md
    #>

    [CmdletBinding()]
    param()
    try {
        $progid = Get-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\Shell\Associations\UrlAssociations\http\UserChoice\' -ErrorAction Stop | Select-Object -ExpandProperty 'ProgId'
        if ($progid -eq 'MSEdgeHTM') {
            'Edge'
        } elseif ($progid -like 'BraveHTML*') {
            'Brave'
        } elseif ($progid -like 'ChromeHTML*') {
            'Chrome'
        } elseif ($progid -like 'FirefoxURL*') {
            'Firefox'
        }
    }
    catch {
        Write-Error "$($_.Exception.Message)"
    }
}