Show HN: Ekko – post-quantum E2EE layer for Instagram, WhatsApp, Telegram Web https://bit.ly/4gJYoZi

Show HN: Ekko – post-quantum E2EE layer for Instagram, WhatsApp, Telegram Web Hi everyone, I am a big privacy activist and the amount of privacy concerns in the internet with the discussions around European Chat Control, Meta removing e2ee in Instagram and corporations harvesting personal data for AI training is on the rise. The closed source social media companies keep managing and storing our private keys, allowing them to effectively access all of our personal communications.. Many open source alternatives exist, but the problem I kept running into was not a lack of good private messengers. Signal, SimpleX, and other projects already do important work The problem was getting the people to move. A messenger is only useful when the person you need to reach is there. Asking friends, family, coworkers, or customers to abandon their existing chats is a very high barrier. Ekko takes a different approach. It runs as a browser extension on top of existing messengers. Both people still need Ekko, but they do not need to move their conversation. You can continue using the Instagram, WhatsApp, Telegram, or Messenger chat they already share. Actively building this and trying to achieve a seamless automatic encryption in the UI across all popular messengers and adding support across all browsers, IOS, android and social media.. Under the hood, Ekko uses hybrid X25519 + ML-KEM-768 and XChaCha20-Poly1305. Private keys are generated and kept on your device. You can claim an Ekko handle to make exchanging public keys easier, exchange invitations directly without an account, or self-host the public-key directory. Currently: - A Chromium browser extension, Experimental Firefox and Safari builds - Instagram, WhatsApp Web, Telegram Web, and Messenger integrations - A self-hostable key directory - Open-source client, protocol, and server code Early version Chrome Web Store: https://bit.ly/4fN1z1e... Source code: https://bit.ly/4fLTTMN Website and demo: https://bit.ly/4h7nqlt I would genuinely appreciate direct feedback especially from people familiar with applied cryptography, browser security, key verification, messenger integrations, potential solutions for iOS UI integration (faster than using browser w/ Safari extension) If you try it, please tell me what breaks or what feels confusing. Actively trying to make this better as a side project! If you discover a security issue, email kirill@useekko.app rather than posting it publicly. Looking for feedback! :) https://bit.ly/4h7nqlt July 21, 2026 at 01:39AM

Show HN: The0 – self-hosted runtime for trading bots, bring your own language https://bit.ly/4vHr1dp

Show HN: The0 – self-hosted runtime for trading bots, bring your own language So Im a solo developer who has always had an itch for algorithmic trading. Initially I started off learning how to trade algorithmically with Yves Hilpisch book "Python for Algorithmic Trading" after reading that book I was hooked and started building algorithmic trading bots. Initially these were separate python scripts that I ran on my local machine. That was a bad idea cause local machines are not reliable and I wanted to run my bots 24/7 365. In my actual career im a software engineer with experience in building distributed systems and fault tolerant web applications. I wasn't interested in deploying my code to managed services like MetaTrader, CTrader or QuantConnect etc because I wanted to have full control over my code and the environment it runs in. I also wanted to be able to run my bots in any programming language I wanted, not just Python. Sometimes I wanted to prototype a bot in Python and then rewrite it in C++ or Rust for performance reasons. Many at this point would have said why not use a framework like Lean or Freqtrade or Hummingbot. However I found that these frameworks were too opinionated and if you decide to use them then your bot is now part and parcel of their framework. I backtested my bots locally in my own specific way, and now with AI my agents can generate code, backtest and analyze the results all locally, no need to run any of it in the execution platform. I wanted bots I could deploy, version, update and monitor like any other software application. I also wanted to explore building something that creates a standardized way of running bots. This has been a 4 year journey and I made a lot of mistakes along the way. The application has seen 4 rearchitectures, 3 of which were basically complete rewrites. The first version was a python program and the bots were just modules that were loaded dynamically. The second was my serverless phase when I internally just wanted something that was online cron triggered and only works for me. The third was the first time I was dipping into kubernetes; more cloud native and the idiot in me decided to try make it a SaaS. The final form is a fully self-hosted runtime, api, cli and frontend that let you run bots as containers in a fault tolerant way both locally (through docker `the0 local`) and in a cluster (k8s) and monitor them with a minimalistic frontend. To support multiple languages there's a thin contract that the bots have to implement: a main(bot_id, config) function and a bot-config.yaml file. The runtime (written in Go) takes care of the rest, it supports C++, Rust, Python, JS/TS, C#, Scala and Haskell for those who are brave enough to try it. More on the architecture here: https://bit.ly/3TuNb57 If you want to play with the0 you can run it locally, guide here: https://bit.ly/4fbMKoV . The0 is open source and licensed under Apache-2.0: https://bit.ly/4wi6mOe I currently use the0 to run my own personal algorithmic trading bots on a single node k3s cluster on a $10/month Hetzner VPS. I have 18 bots running on 2 brokers (Alpaca, Bybit) and they have been running for months without issues. Some bots trade crypto, others stocks, some do risk analysis and others invest. Coolest bit is the API provides an MCP server so AI agents can query the state of the bots, look at their logs, monitor them and even update them. Slap an OpenClaw agent and you can effectively setup an autonomous AI quantitative trading system (good luck chasing Alpha). Now I must admit Lean has all the tools and far more quantitative prowess than the0, but I always felt it does too much. Each Lean engine runs one algorithm, and once you have lots of bots, running and managing all of them in production is left to you. That's the part the0 does, and its the only part it tries to do. If you find hiccups or have ideas for features Im all ears. More on the internals in my first comment. https://bit.ly/4wi6mOe July 20, 2026 at 02:49PM

Show HN: OTP Inspired actor supervisor based full stack templates https://bit.ly/4wjHi9y

Show HN: OTP Inspired actor supervisor based full stack templates https://bit.ly/4b1JmdL July 20, 2026 at 02:47PM

Show HN: I made a cute weight tracking app where you can raise a pet https://bit.ly/4hmPX6k

Show HN: I made a cute weight tracking app where you can raise a pet My girlfriend hated all the weight tracking apps out there because they felt really analytical and cold. So I figured I'd make a cute gamified weight tracker for her! Introducing Wooby! You can choose one of four pets to raise, and log your behaviors and watch your pet get happier. It gives you motivational messages as you log your weight and habits, and you can unlock furniture and decorate your pet's home as well. You can even play with your pet. It's totally free right now and we don't collect any data either so give it a try! https://apple.co/3T96ote July 20, 2026 at 06:37AM

Show HN: A self-hosted AI that turns Hacker News into a daily briefing https://bit.ly/4fJqYJh

Show HN: A self-hosted AI that turns Hacker News into a daily briefing Hi everyone, I read HN every day, but there was always more great content than I had time to read. I know there are already several HN summarizers on GitHub, and I tried some of them. They just didn't fit the workflow I wanted, so I decided to build my own. My project is a self-hosted app that automatically fetches top stories, summarizes them with AI, translates them into your preferred language, and prepares a personalized daily briefing in a nice customizable UI while you sleep. Maybe I'm not the only one who wanted this kind of workflow. I'd love to hear your thoughts, especially on what you think an ideal HN summarizer should do. https://bit.ly/4yNBeYL July 19, 2026 at 11:40PM

Show HN: Headroom – measure your GPU's true bandwidth ceiling for local AI https://bit.ly/4fIGh4R

Show HN: Headroom – measure your GPU's true bandwidth ceiling for local AI https://bit.ly/45e5H4k July 20, 2026 at 01:44AM

Show HN: Deploy AI agent in 5 lines of code https://bit.ly/4fHpwXQ

Show HN: Deploy AI agent in 5 lines of code https://bit.ly/44EoMwo July 19, 2026 at 11:57PM

Show HN: PilotCite – Get your brand cited by ChatGPT, Gemini, and more https://bit.ly/4gM8WXY

Show HN: PilotCite – Get your brand cited by ChatGPT, Gemini, and more https://bit.ly/4yvz3Zk July 19, 2026 at 08:17AM

Show HN: OfflineTTS — Free browser-based TTS & STT that runs locally https://bit.ly/4hlMg0M

Show HN: OfflineTTS — Free browser-based TTS & STT that runs locally https://bit.ly/4wura5n July 19, 2026 at 09:21AM

Show HN: Flightwake – a flight recorder for AI coding agents, not a navigator https://bit.ly/4pqQ7M2

Show HN: Flightwake – a flight recorder for AI coding agents, not a navigator https://bit.ly/44EMOHH July 19, 2026 at 02:14AM

Show HN: Ilya Sutskever's AI reading list into a learning RPG – using kimi k3 https://bit.ly/4wdUdtN

Show HN: Ilya Sutskever's AI reading list into a learning RPG – using kimi k3 I wanted to take kimi k3 for a spin. It turned my simple one sentence prompt to this. Repo here. https://bit.ly/3RJilVV Well, I'm mindblown. Very humbling for me as a software engineer. Took couple hours for it to build this completely autonomously. And it was all from its mobile app. It couldn't render this though from within the app - it does have a feature to preview any website and publish it on kimi's domain - but it didn't work for this. I had to put it on github pages. It doesn't store anything btw - all progress is tracked in your browser storage. https://bit.ly/4ppUE1f July 18, 2026 at 11:54PM

Show HN: Find someone in the dark – light them or light yourself? (Three.js) https://bit.ly/4fdBKpC

Show HN: Find someone in the dark – light them or light yourself? (Three.js) https://bit.ly/4gKPLxG July 18, 2026 at 07:32AM

Show HN: NS6 – Find your perfect domain https://bit.ly/4fo79pK

Show HN: NS6 – Find your perfect domain https://bit.ly/4hk1FPd July 18, 2026 at 04:19AM

Show HN: Qwen3.6-35B-A3B on a 16 GB M1 Pro with SSD-streamed MoE https://bit.ly/4wItLrQ

Show HN: Qwen3.6-35B-A3B on a 16 GB M1 Pro with SSD-streamed MoE https://bit.ly/4b2shQR July 18, 2026 at 12:20AM

Show HN: Deadwire-HTTPD A triple-threaded x86-64 assembly static server https://bit.ly/4wIpMeP

Show HN: Deadwire-HTTPD A triple-threaded x86-64 assembly static server A high-performance static HTTP/1.0 server driven by a bespoke triple-thread architecture (Supervisor, Acceptor, Engine) delivering nanosecond-level processing using raw x86-64 assembly and pure Linux syscalls. https://bit.ly/4ysVQ8b July 17, 2026 at 09:51AM

Show HN: Scribe, a CLI that builds AI agent memory from your repos and sessions https://bit.ly/4pArJrt

Show HN: Scribe, a CLI that builds AI agent memory from your repos and sessions https://bit.ly/4yqzEvl July 17, 2026 at 05:44AM

Show HN: Selenium Boot – Spring Boot's Conventions, Applied to Selenium https://bit.ly/3T11kqJ

Show HN: Selenium Boot – Spring Boot's Conventions, Applied to Selenium https://bit.ly/4ysCgsE July 17, 2026 at 03:39AM

Show HN: Moltshit.com – An Imageboard for AI Agents https://bit.ly/4wNzb4W

Show HN: Moltshit.com – An Imageboard for AI Agents Moltshit.com is a place to waste some GPU cycles doing dumb stuff with LLMs. Moltbook and other clones all require weird human registration stuff and is easier for a agent to pick up and start shit posting on. https://bit.ly/4pv4OxU July 16, 2026 at 11:54PM

Show HN: Autoportrait- Painting Timelapses in JavaScript https://bit.ly/4feiQR3

Show HN: Autoportrait- Painting Timelapses in JavaScript https://bit.ly/4feiREB July 15, 2026 at 11:35PM

Show HN: Asciitopia – a library of animated ASCII art patterns https://bit.ly/4w4PESc

Show HN: Asciitopia – a library of animated ASCII art patterns I wanted an ASCII animation for one of my projects but couldn't find any collection or library for anything like that, so I cooked this up over a weekend with some ideas, inspiration and Claude. Feel free to add your own patterns! https://bit.ly/4boIPme July 15, 2026 at 12:46AM