This is probably NOT what you had in mind. What I use for launching apps under Gnome 43.9 is a traditional file manager. Historically, nautilus was Gnome’s file manager. I note that Gnome still has a file manager, but they don’t call it that. Over time nautilus has been gutted of a lot of its functionality. Thus, I have switched to PCManFM, which is a lightweight lookalike. I autostart it in my Desktop folder, which holds a handful of *.desktop shortcut files. I like the look of the “Icon” view mode because it reminds me of the old Windows 3.1 desktop. Alas, there is no grouping like what you’re hoping for (so far as I know), but you could create shortcuts to other *.desktop folders. PCManFM displays a tabbed window, and you can drag and drop icons onto folders on a window, and between tabs. I launch apps by double-clicking icons.

Using TOR Browser, my user agent is:

Mozilla/5.0 (X11; Linux x86_64; rv:128.0) Gecko/20100101 Firefox/128.0

… so I confirm that Windows is not spoofed now, if ever it were.

You can see what Web hosts see. Visit:

• https://coveryourtracks.eff.org/

This gets a bit messy. Here’s a python code snippet that gives you some idea what I’m up to with my Debian/Gnome desktop:

if while_tweaking('all', 'default browser', '√'):
    ChangeSymbolicLink(
        name='gnome-www-browser',
        action='Make Tor the default browser.',
        old=f'~ccrhode/tor-browser_en-US/{TBB_SCRIPT}',
        new='/etc/alternatives/gnome-www-browser',
        )
    ChangeSymbolicLink(
        name='x-www-browser',
        action='Make Tor the default browser.',
        old=f'~ccrhode/tor-browser_en-US/{TBB_SCRIPT}',
        new='/etc/alternatives/x-www-browser',
        )
    ChangeGConf(
        name='http handler',
        action='Change default Gnome http handler.',
        path='/desktop/gnome/url-handlers/http',
        key_values={'command': 'gnome-www-browser "%s"'},
        )
    ChangeGConf(
        name='https handler',
        action='Change default Gnome https handler.',
        path='/desktop/gnome/url-handlers/https',
        key_values={'command': 'gnome-www-browser "%s"'},
        )
    ChangeGConf(
        name='default browser',
        action='Change default Gnome browser.',
        path='/desktop/gnome/applications/browser',
        key_values={'exec': 'gnome-www-browser'},
        )
if while_tweaking('personal', 'desktop_icons', 'all', 'default browser', '√'):
    full_path = home_path(f'tor-browser_en-US/{TBB_SCRIPT}')
    ChangeDesktopLauncher(  # 2013 Jun 29
        name='firefox',
        action='Desktop icon for browser.',
        exec_=f'{full_path} -new-window %U',  # 2015 May 14
        desktop_name='New Window',
        icon='/usr/share/pixmaps/other/Web.png',
        comment="New window for Tor browser.",
        )
    ChangeDesktopLauncher(  # 2013 Jun 29
        name='firefox',
        action='Desktop icon for browser.',
        exec_=f'{full_path} -new-tab %U',  # 2015 May 14
        desktop_name='New Tab',
        icon='/usr/share/pixmaps/other/Web.png',
        comment="New tab for Tor browser.  This desktop item IS the default browser.  Please leave as-is.",
        key_values={
            'MimeType':
            'text/html;'
            'text/xml;'
            'application/xhtml+xml;'
            'application/xml;'
            'application/vnd.mozilla.xul+xml;'
            'application/rss+xml;'
            'application/rdf+xml;'
            'image/gif;'
            'image/jpeg;'
            'image/png;'
            'x-scheme-handler/http;'
            'x-scheme-handler/https;'
            'x-scheme-handler/about;'
            'x-scheme-handler/unknown;'
            },
        )
    path_local_apps = home_path('.local/share/applications')
    ChangeMkdir(
        name='firefox',
        action='Make default mime desktop files',
        path=path_local_apps,
        )
    APPS_REPERTOIRE = [
        home_path('Desktop/tweaks-New Tab.desktop'),
        '/usr/share/applications/org.gnome.Evince.desktop',  # 2020 Jul 31
        '/usr/share/applications/org.gnome.gedit.desktop',  # 2020 Jul 31
        ]
    for app_name in APPS_REPERTOIRE:
        ChangeSymbolicLink(
            name='firefox',
            action=f'Link {app_name}.',
            old=app_name,
            new=path_local_apps,
            )
    ChangeCommand(
        name='firefox',
        action='Update Mime cache',
        args=f'update-desktop-database "{path_local_apps}"',
        )
    ChangeCommand(  # 2023 Jan 10
        name='firefox',
        action="Force ownership of mimeinfo.cache.",
        args=f'chown {USER.name}:{USER.name} "{path_local_apps}/mimeinfo.cache"',
        )
    ChangeScript(
        name='firefox',
        action='Create defaults list.',
        file_name=f'{path_local_apps}/mimeinfo.cache',
        regexs_subs=[
            (r'\[MIME Cache\]','[Default Applications]'),
            ]
        )
    ChangeSymbolicLink(
        name='firefox',
        action='Link mimeinfo.cache',
        old=f'{path_local_apps}/mimeinfo.cache',
        new=f'{path_local_apps}/defaults.list',
        )
    ChangeDesktopLauncher(
        name='tor',
        action='Desktop icon for anonymizing browser.',
        exec_=full_path,
        desktop_name='Tor',
        icon=home_path('tor-browser_en-US/onion.png'),
        comment="TOR anonymizing browser",
        )
    ChangeDesktopLauncher(
        name='firefox',
        action='Desktop icon for Firefox browser.',
        exec_='firefox',  # 2022 Jan 10
        desktop_name='Firefox',
        icon='/usr/share/icons/hicolor/64x64/apps/firefox-esr.png',  # 2023 Jan 23
        comment="Firefox browser",
        )
    IS_DESKTOP_DIRTY = True

In other words, in place of your browser invocation, you want a script that applies the -new-tab option to the browser invocation and you have to correct a bunch of Gnome configs, symlinks, and MimeTypes to get that to stick.

There’s no doubt there are a great variety of Linux packages in use.

Recently I did a CD install of Debian 12 (Bookworm) desktop with Gnome, which loads a bunch of stuff over the Net. Here are extra packages that I installed manually. The first set is used by and with an automated configuration script that I wrote, so they have to come in to begin with.

Here are third-party packages I admire. These are not available in Debian repositories although some provide Debian-compatible repositories of their own.

Tor Browser Bundle: Anonymizing Network Browser

This is available from https://dist.torproject.org/torbrowser/ as a tarball. This should be unpacked and the whole tor-browser_en-US directory moved to the ~user folder. This is so that the browser can auto-update at user authority as the need arises.

RetroShare: Secure Communications with Friends

This has its own Debian-compatible repository.

metar: A Package to Parse METAR Coded Weather Reports

~/lab_pip/bin/activate
pip install metar --upgrade

weeWX: Open source software for backyard weather stations.

From http://weewx.com/docs/debian.htm. Although a Debian package exists, doing any development practically requires that all the code be in user-space, so don’t install the package. Download it instead.

OpenHAB: Home Automation

This has its own Debian-compatible repository.

Ant: GTK3/4 Themes by eliverlara

From https://www.gnome-look.org/browse?cat=135&ord=latest.

This is for claws-mail. It provides better contrast.

sakura terminal emulator for me 'cause I can edit color sets in its .config file and then switch between them under the right-click menus.