Ask HN: What tool/product do you wish existed?

Memex, as proposed by Vannevar Bush, updated slightly for the modern era.

A proxy that sits between my browser and the internet, and records everything into a huge disk buffer (perhaps using GIT as a storage engine?). It would allow annotation of anything seen on top of the page, without altering the source. The default policy would be to then keep all the pages, images, etc.. for at least a year, and anything not annotated, bookmarked, or otherwise linked to could be safely purged.

You should be able to select a trail of documents, and create a zip file of everything needed to view them, so you can share your stuff with friends.

A device which can detect every single electromagnetic tranmission on every frequency. So i'm visualising something which can pick up bluetooth, wifi, radio, ir etc etc and display it on a screen with as much information as possible. Maybe theres an app for it or perhaps the flipper device can do all of that idk. I think it would just be interesting to see all the activity going on around us.

I've often wished for a tool that seamlessly organizes my digital life across devices. Imagine an all-in-one platform that syncs bookmarks, notes, passwords, and files effortlessly.

While some apps come close, having a unified hub would save so much time and streamline my productivity.

Laser based mosquito killer machine. I remember seeing something about it once but cannot find it now. I think it would be awesome.

- an universal messenger tool which integrates with all the messengers (whatsapp, telegram, signal, e-mail) - an open source ChatGPT voice interface which I can use easily for ongoing interactions. I want to do like "OK Google" and start asking questions and interacting. Additionally it could record all my daily conversations to get context on what I am doing. If it could create calendar events and todos and remind me on that - it would be perfect

A tool that takes my gap-ridden resume, calculates the best trajectory moving forward, and frames it in such a way that someone will actually want to hire me.

If I could, I'd nuke the help system in Lazarus/Free Pascal and create something more granular and/or Wiki based, that could compile down to help files in the current format, if necessary.

There are many things that need correction, but the ask is far too big for a one-off.

A GCC patch mailing list similar to the one we have, but one where you get replies.

At least if you developed something with test cases, documentation and a detailed ChangeLog entries.

A gadget you fill with water and put in a microwave oven and the water gets turned into ice cubes.

tele-transportation