Work · alternatives · 2026
24 alternatives to ZkPaper – Untraceable Document Editor with Proof of Authorship
Hi! I made this as a hackathon project, the result is really cool and works very well. All you need to do is connect with your Metamask wallet and start creating documents. It also has proof of autorship, so we know if you wrote the document, or you just copy/pasted from chatgpt. This could be useful for schools or something. Let me know what you think. Thanks!
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. ZkPaper – Untraceable Document Editor with Proof of Authorship launched in 2024; newer entries below may have overtaken it.
- 1
zkPaper▲5Untraceable Document Editor with Proof of Authorship
2024 · zkpaper.com · its alternatives →
- 2
Hi HN, We (myself, Adhyyan1252 and yush_g) are undergrad students that hacked out this side project last month during Hack Lodge[1] (the ideas and many of the underlying circuits for which came from the 0xPARC community[2])! We’re extremely excited to share this new primitive. Besides the technical challenges building this project that folks here would find interesting (fixing the ZK proof compiler, modifying nodeJS V8 params etc.), we think this is a very novel use case for ZK tech, and ECDSA inside ZK-SNARKs is a starting point that unlocks many other ideas! :D A summarized version of our…
2022 · github.com · its alternatives →
- 3
My personal itch to scratch just recently has been the umpteen formatting foibles of HackerNews. So, in the spirit of making the web more personal again, I knocked up a TamperMonkey userscript to fix up the worst of my personal bugbears. This isn't an attempt at a complete rebrand/redesign of the site, instead it's just fixing up what I think are the biggest design/readability issues whilst trying to remain true to the site's existing aesthetic. Key features: * Base font size increased * A little more room around headings * Top menu bar is full-width and with a little more padding…
2022 · github.com · its alternatives →
- 4
TLDR, Let's Seal gives the finger to Adobe and every doc signing tool (docusign, google, etc) who pay to play with the Adobe Approved Trust List and then charge you for something that should be free. Currently even the person checking if a document/contract is sealed or code is authentic has to also be inside the same Adobe walled garden too. Verification, the part that should be free is the part everyone charges for. Thats the shape Let's Encrypt fixed for TLS, and I wanted the same thing for documents and files. The core idea therefore needed to go a bit beyond e signatures and i…
Jul 2026 · github.com · its alternatives →
- 5
Hey HN, I wanted to share something I’ve been working on: *RAG-Guard*, a document AI that’s all about privacy. It’s an experiment in combining Retrieval-Augmented Generation (RAG) with AI-powered question answering, but with a twist — your data stays yours. Here’s the idea: you can upload contracts, research papers, personal notes, or any other documents, and RAG-Guard processes everything locally in your browser. Nothing leaves your device unless you explicitly approve it. ### How It Works - * Zero-Trust by Design*: Every step happens in your browser until you say otherwise. - * Local…
2025 · github.com · its alternatives →
- 6AF
https://github.com/inoda/private_journal Built this to use myself, and I'm curious if anybody would be interested in using it. I'm also wondering if anybody has tips to make it more secure (I'm super super new to encryption and whatnot). The security is probably a bit overkill since chances are that nobody cares about what I'm journaling, but it is fun to implement from a code standpoint.
2019 · its alternatives →
- 7IA
So I made this: http://userscripts.org/scripts/show/185221 Feel free to use/adapt/modify as you please.
2013 · its alternatives →
- 8
ZK-powered vault for anonymous payouts and state snapshots.
Jan 2026 · its alternatives →
- 9
Hundred Docs▲17Hey HN, I’m Carlos, dev & designer behind Hundred Docs. Here’s the deal: I’ve spent way too many days fighting PDFs in production. Two things drove me crazy: 1. Most doc tools give total freedom → anyone can make a layout disaster + UX is terrible. 2. PDF libraries are a nightmare to integrate So I hacked something that actually works: - You describe the doc in plain English - AI turns it into an editable template - Non-tech folks can tweak it visually - Devs just POST JSON to an API → get a professional PDF back Would love to hear what you think about the product idea and your experience…
Dec 2025 · hundredocs.com · its alternatives →
- 10
Hello HN, Over the last year we've been building snote.app, a Privacy focused, End-to-End Encrypted alternative to Notion. You can write, plan, collaborate and get organized - it allows you to take notes, store files, add tasks, manage projects & more. Whether you're working solo or in a team. We are hoping to use this post as an opportunity to collect feedback from fellow hackers. If there's anything we can do better, please let us know
2023 · snote.app · its alternatives →
- 11
Howdy friends. I've been a zero to one product manager for 12 plus years and along the way I kept borrowing pieces from different discovery frameworks until I had a methodology of my own, one that actually raises the odds of an idea succeeding. This does not replace user interviews obviously, but it leads you in the right direction. Looking forward for your feedback
Jul 2026 · github.com · its alternatives →
- 12
- 13
Hey HN peeps! I've been working on coverlettergpt.xyz for the past few weeks. It was recently featured in the IndieHackers newsletter[0] and is just shy of 900 users. You can use it to generate cover letters by copy & pasting the job description, uploading your CV/résumé, and changing a few settings. The app will then generate cover letters for you, which you can further edit with GPT. You can also manage your jobs, create multiple cover letters per job, and other fun stuff. I'm honestly quite surprised at the response to it, as it's "yet another GPT wrapper," but I've built in some…
2023 · coverlettergpt.xyz · its alternatives →
- 14
I've always been fascinated by cryptographic principles, so I decided to dive deep into zero-knowledge proofs and implement a Groth16 proof verifier entirely in Rust. This project validates cryptographic proofs and demonstrates how succinct, verifiable computations can be achieved. Using Rust's powerful libraries like arkworks, I implemented pairing checks, public input commitments, and proof validation logic while ensuring the code remains modular and efficient. I handled the complexities of affine group operations, scalar multiplications, and optimized public input verification to make…
2024 · github.com · its alternatives →
- 15AW
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 · its alternatives →
- 16
Hey hey! This is a tool I've worked on for a while, and it's reached the point I'm quite happy with the results! Comments and suggestions are appreciated :) Enjoy your day!
2023 · github.com · its alternatives →
- 17
A friend and I built this as a side project to help us collaborate on files with our agents. Claude / Codex kept outputting .md and .html files which are great until we needed to share them, so we built this small website to help with that. Agent can either use an HTTP + Skill or an MCP which also uses MCP Apps to add widgets to Claude Desktop / Mobile chat. Would love any feedback and hopefully this helps someone else as it did us!
Jun 2026 · workplane.co · its alternatives →
- 18WW
Over three months ago, I posted my book on HN and got tremendous +ve reponse. I am happy to inform that I have published the book to leanpub as per the comments I got on HN itself! It is pay as you go model, and the minimum is $0 because I wanted to contribute back to the FOSS Community
2016 · its alternatives →
- 19
Hi HN — I’m Maaz. I built Free PDF Editor by TechRex, a privacy-first PDF toolkit that runs entirely in the browser (client-side). No signup, no watermark. Why: I was frustrated that many “free” PDF tools require uploads, add watermarks, or force accounts. I wanted a simple tool where files stay on-device by default. What it includes: - Edit & annotate: type on PDF, highlight, draw/markup, add notes - Add images/branding: insert images/photos, add a logo to a PDF - Organize: merge, split, extract pages, delete pages - Compression: compress for email/WhatsApp/portal…
2025 · pdffreeeditor.com · its alternatives →
- 20A7
Hey HN, A long time ago, due to the lack of viable solutions with E2EE and offline-first syncing, I decided to dedicate my time to making one (which has its own story: https://yaad.one/blog/yaad-story). In the course of ~3 years, I developed a knowledge management app with these primary features: - Primitives: Notes, Tasks, Contacts - Grouping with "Boxes" - Offline-first - Multiplatform; currently available for Android, Windows (x64), macOS, and Linux (ARM). - Fully end-to-end encrypted (AES-256-GCM) - 13 Languages, 8 calendar systems - Light & dark mode Last night, I…
2024 · yaad.one · its alternatives →
- 21
Hello everyone! I always found it hard to find new research papers outside of my usual bubble. I thought a random feed (with no recommendation algorithms) might be a fun way to explore. But I also didn’t want to waste time on completely unrelated stuff — so the idea of a fast, swipeable format came to mind. Wikitok was a real inspiration! But Arxiv and Open Review APIs weren’t as robust as Wikipedia, so I pulled the papers into a Postgres backend. Right now, I’ve indexed papers from a few recent ML conferences to see if this might be useful for others too. No signups required and it’s…
2025 · artok.app · its alternatives →
- 22IB
I built this as a Garage Project over the weekend. https://x402.backpac.xyz/ Still working on refining things, but let me know your thoughts. Cheers.
2025 · its alternatives →
- 23IB
Hi all, I wanted a robust way to keep track of my receipts without needing to keep them in a box and so i found paperless - but the existing paperless ai projects didn't really convert my receipts to usable data. so I created a fork of nutlope's receipthero (actually it's a complete rewrite, the only thing that remains over is the system prompt) The goal of this project is to be a one stop shop for automatically detecting tagged docs and converting them to json using schema definitions - that includes invoices, .... i can't think of any others right now, maybe you can? If you do please make…
Feb 2026 · its alternatives →
- 24
Proofly▲7Verify originality. Track subscriptions. Stay secure.
Nov 2025 · proofly.solutions · its alternatives →
Also compare
- zkPaper alternatives
- StealthDrop – Anonymous crypto airdrops using zero-knowledge proofs alternatives
- I built a Hacker News userscript to make this site more legible alternatives
- Let's Seal – Let's Encrypt for document signing, free and self-hosted alternatives
- RAG-Guard: Zero-Trust Document AI alternatives
- A free private journaling app alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →