Old-school adventures meet new-school tech.
I'm SeKaDD, and I make small, focused tools for playing pen & paper RPGs on your computer. If your rulebooks are PDFs, your dice live on your desktop, and your character sheet is a browser tab, these are built for you. Right now that's pppdf, a borderless native viewer for your PDF sourcebooks; Dices, an always-on-top desktop dice roller that floats above your open PDFs and notes, interactive character sheets and playaids.
I also build for the people who make the games. My TextAdventure UI plugin turns an RPG Maker MZ project into a "point & type" adventure. It's 1980s text-parser magic dropped into a modern engine.
Most of my tools are free or name-your-price, and everything ships under my label, SeKa Digital Distributions. Classic mechanics, modern convenience, and nothing that gets in the way of the game.