Alternatives
Products that do what A beautiful and local-first PDF reader for studying dense things does
Recently, I found myself having to read the book "C++ primer" and I just couldn't do it. Maybe my attention span is too little now with Claude and Codex, maybe I'm lazy... but I just couldn't get myself to focus. While reading, I needed something to do. I wanted to talk to the text, I wanted to leave notes, I wanted to use to use my keyboard to quickly flip through pages. The only good available option on a Mac was "Preview" and it was ok, but definitely not there. So I built Quincy primarily for myself. With it you can - "Talk" to the page you're reading, create a quiz about the page, and…
- 1LA
I've been working on Lurnby for 2 years. It's kind of like a mix of pocket + kindle + anki. It lets you => add add epubs, pdfs, and web articles to the app => highlight and add comments => tag and organize highlights => review them with a spaced repetition system Today I made the decision to open source the project. I'm passionate about helping other people learn to learn better and hope that this will allow a lot more innovation in the tool and the space. I'm very new to open source and development in general really, but looking forward to receiving the guidance of the community.
2022 · github.com
- 2AW
Hey, I've made a pdf reader with ai assistance, you can quickly ask questions about the text and the images, and it will have context about all of your reading material so you can ask questions freely, try it now, I'm in open beta to find bug and get feedback. upcoming features: - Highlighting - Highlighting with Notes - Bibliography - Automatic Reference file opening - Improved UX and robustness currenlty alot of bugs so please let me know if you found any. feedback appreciated
2025 · pdf-hub.com
- 3AU
I blew off a bunch of "serious" side work last month and built a tiny little embeddable editing tool that I've wanted to have for Ars Technica since, well, the beginning of internet time. It lets any random user make edit suggestions for writers/editors to consider and act on. I think it's pretty cool and it's gotten some good use over the last few weeks. Of note, it's uses a single-field signup form. Edit administration is currently email based, so all it needs is an email address to get people going. I'm sure I'm not the only person to ever do this, but I basically just turned it on one…
2011
- 4IB
Hey so I am making my own book reader and wanted to share it with y'all on hackernews and I saw a submission talking about DRM free books[0] so I decided to submit this submission on Hackernews to show what I am upto :-D I prefer minimalism so I have created three different flavors of it depending upon the particular use-cases and I have linked the most minimalist one as the submission. If someone is interested in a Epub/pdf reader, I have recently made one: https://epub.mirror.forum/ After making that, I was also feeling the need of having standard book downloads and…
Jun 2026 · epub.mirror.forum
- 5JA
Hey everyone, I'm Michael, a product engineer at Hyperink. Over the past month or so, I've been developing a rich, social reading experience for our content, freeing us from the stranglehold of MOBI and EPUB file formats. Today, Jeff Atwood generously granted us permission to release half of his book completely free on this Crowd Reader (paid customers get to see all of it there).<p>The problem: paperback/print always wins over digital and arguably e-ink. Our solution: make reading a unique and asynchronously social experience.<p>I've love to get some beta feedback and…
2012 · hyperink.com
- 6EM
Yesterday I decided I wanted to experiment with different ways of reading HN. After considering a few options, I settled on a Mac app and spent a couple of hours planning/sketching on paper. This morning I fired up Xcode and spent 4 hours hacking away and I must say I'm liking how it's looking. Since the project is in its very early stages, I though that it could be a very good time to get some feedback. I've posted a few screenshots at http://imgur.com/a/rCbVN and uploaded a binary at http://abra.rm-fr.net/~fiam/HackerNews.zip If you have some free time, give a try and let me know what you…
2011
- 7
Hey yall, I built this for my makerspace. We wanted to let each other borrow things, but also didn't want to put up a big shiny sign saying "hey everyone, my garage has a super fancy oscilloscope just sitting there" and also didn't want to necessarily always need to say yes to everything. However, when I show it to people, they've been suggesting using it for other things like board games, or wedding equipment, etc. I'm still trying to find PMF, so please let me know what you think! For the stack, it's all Elixir + LiveView which is really nice, and then Fly.io, Fly's MPG, Tigris Data,…
25d ago · toolpool.garden
- 8CO
First tutorial to date. Writing your first C program, includes a link at the bottom with a detailed look at printf() as optional reading. I would love some feedback, as I intend writing up a lot of dev articles for people to learn from : www.xanthu.com/first-c-program
2013
- 9ME
I read Markdown all day, mostly Claude .md, and other AI outputs. Every app I have tried felt janky or too much work to just read an md file. I just wanted to open a .md file and read it the way Preview opens a PDF. So I built Kite, a Markdown reader for Mac. It has QuickLook just like Preview and I have baked in features that help people reading lot's of AI markdowns. It one-time purchase, no subscription. I put it on TestFlight so you can try it before paying anything. I would really like this crowd to try to break it. Tell me which files render wrong,what feels off, what is missing.…
Jun 2026 · kitemarkdown.com
- 10IW
Hey HN, I wrote a short book about the fundamental aspects of Clojure. The target audience is programmers with at least minimal experience who want to learn how to express solutions in Clojure (and perhaps in LISP, generally). If the price is a bit too steep for you, send me an email (address in bio), and I'll provide a discount coupon. If you can't afford it all, and believe the material may help you for studying or interview preparations, I can send you a free copy.
2025 · leanpub.com
- 11IC
Hi HN! I've been tinkering on a programmatically controlled typewriter. I've got a working prototype and it's been a lot of fun to play with. Of course I connected it to ChatGPT so I can chat with it, and I also have it acting as a clock, but it doesn't just type out the time. It writes a poem about the time. I'm posting this to gauge interest in purchasing one. It's all handmade, so I can't scale it up, but if enough people are into it, I might make a small batch. Or maybe sell it as a kit for the DIY crowd. Anyway, just wanted to put it out there and see what you all think. Thanks for…
2024 · notes.bayesup.date
- 12IB
I use AI while reading the Bible and I suspect others do too. It's helpful whether you're struggling with the Elizabethan English, or want added context/want to know what theologians say about a passage. So I thought, why not make the AI come to you? TIA for any feedback!
2025 · scripturia.com
- 13AI
This is a first draft of an app that I am working on that is the "anti blinkist (the book summarization app)". I call it Augre (aug-ur - short for augmented reader) and the whole idea is that I want to immerse more, not less in a book. I want to dive deeper into the text, chat with others who are reading the book and get into delicious discussions. It's still early but here are a couple of features: 1. A really solid cross platform epub reader 2. Left sidebar which augments the reading experience with tables, images, maps (and other artifacts coming soon) 3. Book chat where you can chat with…
2025
- 14IR
I’ve been frustrated with PDFs and found arXiv HTML lacking, so I built a fully interactive paper reader. Features: • Hover references, citations, equations • Light/dark mode • Auto-generated dependency graphs for definitions/lemmas/theorems • Table of contents that syncs with scroll • Highlighting + annotations • “Copy raw LaTeX” anywhere Featured paper: Video models are zero-shot learners and reasoners (Veo 3) https://www.sciencestack.ai/arxiv/2509.20328v2
Nov 2025 · sciencestack.ai
- 15
After watching The Odyssey, I thought it would be cool to check out some scenes from the source in detail, but I don't have time to read the whole book. So I came up with a sort of zoom/microscope, that allows to see the whole book at a glance and then zoom in (by pinching) on the part I'm interested in. I can do so down to the actual source text and get the authentic feel the author intended, at the same time I better understand where am I in the text and also the character and places are clickable so I can quickly orient myself on the context. Moreover each character has relationships…
17d ago · book.curiora.space
- 16AD
Hi all, I threw together a small prototype I am calling “Notepad.ai”. A new take on UIs for interacting with LLMs. While I enjoy using LLM’s in the chat format I wanted to see what it would be like to do it in a more long form style. It let’s you write in a pretty free form, much like Window’s Notepad, but you can choose to hit ctrl+[ to analyze the text with a preset prompt of your choosing. It has a few other small features. It’s WIP and very experimental. I would appreciate any feedback or thoughts. Video: https://youtu.be/ntdlgFmSxQY Live Demo:…
2024 · github.com
- 17LI
Hi HN! I kept hearing about Lisp and why it was special but didn't have a great place to start. I wanted something self-contained that helped me develop intuition rather than fluency. My hope is this is helpful for casual programmers, professionals from other fields who interact with code, or engineers who haven't had much exposure to interpreters or compilers. Hope this helps anyone else who's curious about getting a sense of Lisp and what makes it special with a limited time investment! Feedback or other cool Lisp things welcome :)
2022 · github.com
- 18IM
Try it at: ssh krnl.duetbrowser.com No sign up, totally free - no download. Let me know what you think. Prior art exists (brow.sh) but I wasn't satisfied with their graphical take. I wanted the raw, old skool terminal days of the early internet - BBS, and old green phosphor library comptuers - but running the modern web, with all the bells and jingle jangle whistles (JavaScript, etc). No funding, no VC, just 100% raw terminal fun. Not sure how long the demo will last, but try it out.
Jul 2026
- 19FA
Made this app because I was tired of not knowing 50 words/book when I read in English. You can try it on the AppStore searching "Quicky app". For Android user please use the web mobile version at https://quicky.app/. The Desktop version has a shitty responsive design. IMPORTANT NOTE: If you are not French, you will want to tell you are to try the features of the app (sorry it's only in French though) I'd love to hear your feedback.
2019
- 20
I made this after seeing someone posit the idea online yesterday over lunch then spent some time refining it. So far it's pretty impressive IMO! Right now I am running Qwen3-30B-A3B on my 24gb unified memory m4 MacBook Pro at 50 tok/sec and this should definitely not be working for such a large model on my middling hardware. Things are detailed in the README to get up and running and DESIGN.md has details on all the choices and such made along the way.
23d ago · github.com
- 21IB
I built Read Fast after realising I was saving hundreds of things to read and reading almost none of them. It automatically turns saved content into a scheduled briefing and sends it to my inbox at whatever time I choose. New version since last post actually allows you to bulk upload URLs. So you can just dump links here and Read Fast will scrape and brief for you. Great for actually reading the things I want to. Curious if that resonates with people?
Dec 2025 · read-fast.replit.app
- 22IB
After fine-tuning GPT for a personal project, I realized how tedious it is to write plain text in a massive JSON file. That's why I built this app for my own use, and I want to see if others could benefit from a tool like this as well ;)
2024 · finetuna-ui.com
- 23QG
This is a tool which lets you easily manage different versions of ideas, helpful for writing essays. I've found myself wanting this every single time I go through the drafting process when writing, and I've been frustrated every time I find myself accidentally working on an old draft just because there was a paragraph that I liked better. This solves it. I hope the community like this as much I enjoyed working on it! Note that it's currently a beta waitlist because there's some bugs with the undo/redo state management and so I want to dogfood it for a bit for reliability. It says April…
Mar 2026 · quillium.bryanhu.com
- 24TA
I created this tool over the weekend because, as someone interested in AI and technology, I find many research papers on arXiv fascinating but often incredibly dense and difficult to understand due to the heavy jargon and technical language. I wanted to make these complex topics more accessible to laypeople like myself by converting the topics described in these papers into full-length books that break down key concepts, making cutting-edge research easier to grasp. You can think of it as generating prerequisite reading materials before being able to read the actual paper. Here are some…
2024 · instabooks.ai
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