Ask HN: What software product do you wish existed that you'd use?

A software that fine tunes the whole operating system automatically based on my usage patterns. It would happen continuously, so if my patterns change over time, it should adapt reasonably quick.

E.g.

  > RSS reader should update when I wake up the machine, not only when its timer expires
  > That menu option 3 layers deep I keep using in application X should be moved to the toolbar as a button.
  > While at it, remove the right-justified button in LibreOffice Write/Word, something which I only pressed once accidentally in 1993.
  > YouTube's sound should be routed through my headset between 10AM and 6PM weekdays. Afterwards route it through the speakers. All other applications should use the speakers all time.
  > Order the task-list in a dynamic way. E.g. when I work, I frequently look up things in the browser - I just Alt-Tab once, then Alt-Tab again to get back. If I use another application out of this pattern, that will mess this up, I will have to Alt-Tab a lot of time, until this app gets back to the end of list (or I close it)
  > Etc.

An Android or Service Workers NFC/QR code inventory management app that was FOSS and fast enough for home organization.

Wouldn't it be awesome to tap a toolbox, tap "Add items" then have anything you tap marked as "Last seen in the box at X time"?

Or tap a box and hit "Do count" then tap everything that should be in there and get a warning if there's an incomplete count?

I'm not sure I'd use it enough to pay for it, but I'd probably contribute to a FOSS version. I've thought about doing one myself but don't really need another side projects to maintain all by myself.

I'd really like a chord identifying plugin for Ardour. For musicians, it's probably easy to tell at a glance what notes are playing and what chord it makes just by listening or seeing the MIDI, for but for a hobbyists, there's a lot of "Wait what did I put there?".

I want private corporate LLMs trained to mimic individual employees by periodically ingesting all data they generate on a bunch of different platforms: email, Slack, Salesforce, Microsoft Office, Zoom meeting recordings, Figma, GitHub, etc. Give me an AI bot that mimics each of my colleagues so that I can ask them questions. That way I'll only have to ask the human if the AI answer is unsatisfactory.

AI-generated porn feed. Photo-realistic, high-quality images. It would change what is generated based on my tastes either through me liking or disliking certain content, my engagement on particular content, contracts, others, or by specifying what my desires directly through some sort of prompt.

I want this software to produce an infinite scroll of content that is tailored towards my tastes, with the algorithm constantly trying to refine the feed by suggesting new things and observing my reaction. It should be available offline running on my own hardware if I choose to do it that way but also available as a paid-for service.

I should be able to favorite and save certain content and share it with other users of the software easily.

I’m sure there are many tricks you could do with this such as caching content in advance to view as to not overload machines at view time or for people with similar interests to share content, though these are all implementation details.