What's the oldest piece of software you still actively use daily

[Ava_75]

I still run a text editor from the early two thousands for quick notes, the interface hasn't changed once, and honestly that's exactly why I keep coming back to it over anything newer

There's something genuinely satisfying about software that just works and never demands an update, a subscription, or a redesign nobody asked for

Curious what people's actual oldest daily driver looks like, not nostalgia pieces sitting unused, specifically stuff you genuinely open every single day still