Work · alternatives · 2026
24 alternatives to After 7685 commits, I built an offline-first, end-to-end encrypted PKM
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…
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. After 7685 commits, I built an offline-first, end-to-end encrypted PKM launched in 2024; newer entries below may have overtaken it.
- 1
Hello HN. I am excited to share with you my new book, Bulletproof TLS and PKI. I've worked in this space since the very early days (think SSLv2), always frustrated with the fact that the field is vast but the documentation poor. That first led me to create SSL Labs (which ended up being very popular) and then the first edition of my book (in 2014), where I aimed to cover everything a curious person needed to know about SSL/TLS and PKI. Most importantly, it's a very practical book that you can use to just learn what you need at that moment. The second edition (just out) adds coverage of…
2022 · feistyduck.com · its alternatives →
- 2
Definitely one of those "20 minute adventure gone wrong" projects where all I wanted initially was a quick wireless rubber ducky for bitlocker keys and the like and then I kept adding stuff like AES-256..... Currently working on adding WebAuthn/FIDO support because the hardware is already there and scope creep is a lifestyle at this point. Would love feedback, especially on the security side. Repo and PCB files are fully open source.
Jul 2026 · github.com · its alternatives →
- 3
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 →
- 4
- 5
LinkBlink▲26Hey everyone! I’ve built an app that lets you easily create microlearning “bytes” on any topic and have them delivered directly through Telegram or WhatsApp. There’s also a discovery interview feature to tailor content recommendations, plus options to share what you create with others. I’d love to hear what you think! Here are a couple of short videos demonstrating how it works: https://youtu.be/1LwwF1iJynY https://youtu.be/bKXODFoS-9o https://youtu.be/ulDC94CxKFU Any feedback or suggestions would be greatly appreciated. Thank you!
2025 · linkblink.tech · its alternatives →
- 6
Hello. I made this project as an experiment in using key cryptography for user identity in a client server model, and for some future peer to peer projects that I am working on. I am looking for feedback, please let me know what you think. Also, Merry Christmas to HN! :-)
2022 · github.com · its alternatives →
- 7MP
My first "real" web app! I appreciate any comments/suggestions.<p>Also I am available for hire. Contact me at www.sambolgert.com
2012 · se.cret.ly · its alternatives →
- 8MF
I know everyone is a bit burned out on blockchain and cryptocurrency related stuff around these parts, but I've been working on as a side project for the last few months and thought you guys might be interested: https://cryptoempire.io/ It's still a bit buggy and incomplete (the mobile ux needs a lot of work, the leaderboard isn't functional yet, etc.), but I've reached a point where I'm not totally ashamed of sharing it :) Any feedback would be most welcome!
2018 · its alternatives →
- 9IM
Hi, Sometimes I want to wrap an existing website into an Android app quickly so I made a service that does just that https://html2apk.com/ If you find it useful I'll be happy to hear about that, if you have any other comments/suggestions I'll be happy to hear about that too. 10x, Gilad
2019 · its alternatives →
- 10AF
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 →
- 11
Hey HN, I'm a solo developer from Nigeria. I built Quran Unlock - an app that blocks distracting apps (TikTok, Instagram, etc.) until you complete your daily Quran reading. The idea came from my own struggle with phone addiction. I wanted to read Quran daily but kept getting distracted. So I built this for myself, then shared it. Some stats after 2 months: - 123K+ users - 64.9% returning user rate - 31M events tracked Tech stack: - React Native - Firebase (Auth, Firestore, Analytics, Cloud Messaging) - RevenueCat for subscriptions - iOS Screen Time API + Android UsageStats App Store:…
Jan 2026 · quranunlock.app · its alternatives →
- 12
Hello everyone, I have always loved coding and in the couple I was thinking of making an open source project and it turned out to be awesome I hope you guys like it. I present Explore Singapore which I created as an open-source intelligence engine to execute retrieval-augmented generation (RAG) on Singapore's public policy documents and legal statutes and historical archives. The objective required building a domain-specific search engine which enables LLM systems to decrease errors by using government documents as their exclusive information source. What my Project does :- basically it…
Feb 2026 · github.com · its alternatives →
- 13MT
Long story short: After heartbleed thingy decided to use a password manager. Didn't want to buy one. Didn't like KeepassX interface. Started using MacPass. Tired of bugs and form fillings. Decided to make my own text editor that can encrypt saved files with password. Try it out here: http://textcrypt.4apps.lv/app/updates/TextCrypt_1.0.424.zip and let me know what you think. Would you use it? Any feedback, suggestions which direction to go? p.s. Its an early Alpha version.
2014 · its alternatives →
- 14
Recent news about Trump admin officials accidentally leaking war plans via Signal (The Atlantic, March 24, 2025) has renewed concerns over secure messaging. But for me, those concerns aren’t new. While visiting family and friends in Ukraine, I sat down with a friend for coffee at a café in Kyiv and that’s where it all started - the first sketch of a messenger built for privacy, not profit. We knew most messaging platforms were vulnerable to leaking data, tracking users, and exposing private conversations. We believed we could build something better. Then the war in Ukraine began, and…
2025 · gospl.chat · its alternatives →
- 15
Show HN: What I learned building a local-only password manager (PassForgePro) Hi HN, I built PassForgePro as a learning project to better understand password manager design, local-first security, and common cryptographic pitfalls. The goal was not to replace mature tools like Bitwarden or KeePass, but to explore: * how a local-only, zero-knowledge style design can work * key derivation with PBKDF2 and encrypted SQLite vaults (AES-256-GCM) * handling sensitive data in memory and clipboard cleanup * defining a realistic threat model and its limitations This project is experimental and…
Jan 2026 · github.com · its alternatives →
- 16AH
I've been playing around with Android development recently, and made this Hacker News app this weekend: Market link: https://market.android.com/details?id=com.mellort.hackernews ($1) Dropbox link: http://db.tt/jlqIcBg1 (free: if you like it, DL from the market, too!) I used api.ihackernews.com for the data. Unfortunately, some of the pagination from that source is broken, so I can only return one page of results. In the future, I might play around with creating my own API server on App Engine. I'm not sure what my plans are for the source yet, but I'd like to make it open source. If you're…
2012 · market.android.com · its alternatives →
- 17DO
Hi HN and Happy New Year! I built DailyNote, a minimalist daily notes app: one note per day, a year-at-a-glance calendar, and local-first storage. The interesting bit is the encryption + sync model: - Notes are always encrypted locally before syncing to Supabase. - A dedicated data key (DEK) encrypts notes; your password only wraps that DEK (KEK). - So when you change your password, it just re-wraps the DEK — no re-encryption of note data. I built the whole project in one day using Claude + Codex with a spec‑driven approach (tight PRD → implementation). It’s React/TypeScript, IndexedDB…
Jan 2026 · its alternatives →
- 18
I upgraded my encryption setup recently, so I thought I should write about it, just in case it is helpful to someone else. As a security professional, I have a different threat model from most folks, and as such my setup does involve a bit more complexity than what I’d recommend to everyone. But if
2020 · captnemo.in · its alternatives →
- 19IM
Hey HN! Thank you for all the support and feedback on my original submission 2 months ago. I've been improving the backend using a MCTS/AlphaZero approach and it's currently producing much better results. My long term goal is to allow users to manage multiple projects, deployed autonomously, both from scratch and by making continual updates all prompted with natural language. The cost of each project has been lowered to $9 as performance with smaller models has improved (I migrated from Claude-3-Opus to gemini-1.5-flash). Thanks for checking it out!
2024 · saas-quick.com · its alternatives →
- 20
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!
2024 · zkpaper.com · its alternatives →
- 21MF
Please have a look at www.socialeaks.com and tell me what you think. This is my first adventure in coding (my background is not CS). I started learning rails about a month ago via railstutorial.org. When I finished that, I felt the best way to continue learning would be to just build an app from scratch. I came up with this concept while observing how crazy the world had gone over WikiLeaks. I thought this was a funny idea. I also thought it would be fun to build! So, here I am. I built this in rails 3 and it is currently living on Heroku. It took me about two weeks to code, doing just about…
2011 · its alternatives →
- 22
Hi Everyone, I created a mobile app called Accumoo, and I would appreciate it if y'all can have a look, download and give me a favorable review. Lots of blood, sweat, tears and love went into this app, and I hope you LOVE it as much as I do - it's the app I always needed and wanted. Anyhow, I've been a Rails developer and Software Engineer for a long time, and this is my first stab at a mobile app. It's a "habit tracker" app on steroids that's just fun to use - syncs across devices, local-first architecture - and an easter egg game for good measure. Help a disabled vet out and give it a go.…
Jan 2026 · apps.apple.com · its alternatives →
- 23IM
orignally shared this on startup school... i thought id' share it here. i'm using a `nocode communication tool` (a web-based interface... a single browser tab!) for all of these things: 1. landing page — the landing page is the product and i wanted for folks to feel "transported" right into the app without having to walk through a shitty b2b marketing-style content. this is akin to my experience back in the `BBS` days of the mid-90's where you were immediately into the app, community, and tool. no terms of service, no privacy policy. just pure, immediate value. 2. building community — we…
2021 · its alternatives →
- 24IB
Hey HN: I'm Chino, the founder of Keyring (https://joinkeyring.com./), it's my first time posting here, nice to meet you all. Keyring lets users safely share subscriptions between household members. No passwords revealed (so that logins don't spread) and create a custom bundle of video, music, and news subscriptions between a group. We're the cable bundle for the digital generation. Previous to founding Keyring, I launched over 160 mobile apps, +50 of which hit the App Store's top charts and have advised two startups to exit, and have angel invested in a few startups, VinoVest…
2020 · its alternatives →
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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 →