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The 28 AI tools I wish existed

It's September 2025. We have Claude Opus 4.1. GPT-5. Nano banana. There has never been a better time in the history of computing to build software. Here are a few ideas I wish existed.
212 sats \ 0 replies \ @optimism 5h
  1. A recommendation engine that looks at my browsing history, sees what blog posts or articles I spent the most time on, then searches the web every night for things I should be reading that I’m not. In the morning I should get a digest of links. I also want to be able to give feedback on which were good suggestions and which weren’t to improve the next day’s digest.
See: Perplexity's Comet, OpenAI Pulse (#1237696)
  1. An AI agent that can build one-off specialized AI agents. I want to describe a task like “build me an agent that can decompile code” and this agent will go off and build a hyper-specialized code decompilation agent for me.
  1. A minimalist ebook reader that lets me read ebooks, but I can highlight passages and have the model explain things in more depth off to the side. It should also take on the persona of the author. It should feel like an extension of the book and not a separate chat instance.
Ignoring the last 2 requirements, Apple Books, and basically every other ebook reader including Google's Play Books on Apple hardware has this. It could use some further improvement though.
  1. Semantic filters for Twitter/X/YouTube. I want to be able to write open-ended filters like “hide any tweet that will likely make me angry” and never have my feed show me rage-bait again. By shaping our feeds we shape ourselves.
This was the first thing people built last year when it became feasible. There was a better one but this does it too.
  1. An agent that can create a detailed curriculum for very niche topics. I should be able to say something like “I want to learn everything we know about the science of progress” and it would search the web for people, blog posts, YouTube videos, essays, and textbooks. Then it should read through all the content, and give me a guided curriculum that will take me from beginner to expert.
Perplexity has offered this since forever.
A writing app that searches the web for the topic you’re writing about, then composes a “suggested reading” list based on what it thinks might be helpful for you to read. (Writing apps should never write for you.)
Like Smart Connections for Obsidian?
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