uMatrix browser extension. It has been marked archived by Gorhill, last release is two years old, you are supposed to just use uBlock [Origin]. However, it still (luckily) works fine and is exactly what I want. (Sure, I won't install this for my parents.) The GUI to simply choose what you want the site to be allowed to do is perfect.
KDE 3 over everything else.
I love modern KDE, and use many different desktop environments regularly, but nothing will ever come close to the feeling I had the first time I got to experience KDE. And I really don't think anyone has been able to approach the configurability KDE 3 had
I see you, but man, I am of the exact opposite opinion. Configurability is, for me, a bug that needs to be fixed when it comes to desktop environments. It should be as standard as possible across machines.
A good DM need to strike a balance between configurability and ergonomy/ease of use.
As a novice user I loved to tweak the many configuration options, but it's time consuming and often lead to something worse than the default, leading to further tweaking.
Now I appreciate good defaults because that means there's few settings that needs tweaking.
Some DMs like early Gnome 3 releases went a bit too far removing configuration options, and have been slowly adding them back over several years.
The other day I was able to delete 80gigs of dupicated files cause by copying and pasting on a GUI
I've tried replacing closed-source feed reader apps, but it's hard when most of the focus is in self-hosted webapps, paid services or the UI is very uncomfortable. Also, mobile apps for this are counted and I just can't with their UIs.
I still use Usenet BBS boards.
Amarok 1.4. Loved that thing. Everything that came afterwards in both terms of version and other similar apps even the mainstream ones do not get close to how good Amarok used to be.
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