Show HN: Hacker News profile text can be used for prompt injection https://bit.ly/43ri4XW

Show HN: Hacker News profile text can be used for prompt injection https://bit.ly/3IJOLYV May 27, 2023 at 04:40AM

Show HN: Eludris, A free and open source, federated and E2EE chat platform https://bit.ly/3MyxDq5

Show HN: Eludris, A free and open source, federated and E2EE chat platform https://bit.ly/43kVqAy May 26, 2023 at 09:08PM

Show HN: I created a game to memorize the fretboard https://bit.ly/3CgRIMZ

Show HN: I created a game to memorize the fretboard Hey guys I've been playing the guitar for many years but I felt like I had hit a wall and wasnt making progress. One of the things I realized was holding me back was unfamiliarity with the fretboard. I'd often find myself in situations like “Uhh…Where’s the C# here?” “Where’s the flat-3rd of this root on the 4th string?” “Sure would be nice to know the closest min7 triad shape to play over here..” I tried memorizing the fretboard the obvious way but it extreeemly boring for me. Being a developer, I decided to turn it into a game. I'd love for you guys to try it out and let me know what you think: It's at [www.fretboardfly.com]( https://bit.ly/3CgRJR3 ) I've only built the first module right now which is for note memorization but there's been enough interest that I'm planning on building more modules. Please let me know if you like it, what you'd change about it and what other modules you'd like to see in future. The stack is Vue 3/Nuxt 3/Firebase/Firestore/Tailwind deployed on Vercel. Happy to field questions on the tech side of things as well https://bit.ly/3CgRJR3 May 26, 2023 at 03:18PM

Show HN: Hyvor Blogs – Multi-language blogging platform https://bit.ly/3IDrZll

Show HN: Hyvor Blogs – Multi-language blogging platform https://bit.ly/3oy0bYJ May 26, 2023 at 07:45AM

Show HN: Hacker News user experience enhancement browser extension https://bit.ly/42dtSvU

Show HN: Hacker News user experience enhancement browser extension Hello everyone! This is a browser extension that attempts to enhance Hacker News user experience, while your data is kept secure, and private (never leaves the browser). Browsers have evolved significantly since doing a v1 back in 2010, which was one of the contributing factors, for attempting a complete re-take few months ago. Personally, I was surprised how useful it turned out to be when browsing around HN. On the linked page you can find install link(s) from web-browser stores, and demo video/screenshots of the features[1] What do you think ? [1] including, browsing content with multiple columns, infinite scroll for lists, user profile tooltips, dynamic comment reply, dark-mode, ... https://bit.ly/45uFoWG May 26, 2023 at 12:03PM

Show HN: DestinyLFG Invite/Join Copier Plugin https://bit.ly/439zysf

Show HN: DestinyLFG Invite/Join Copier Plugin Awesome Better Discord plugin that helps make joining and inviting way easier on discord in Destiny LFG. Save you from countless times messing up highlighting and copying the the gamer tags by selecting an extra space before or after https://bit.ly/3MF8ZnA May 26, 2023 at 10:02AM

Show HN: Hacker News in Slow Italian - AI-generated podcast (with code) https://bit.ly/3MyJdRR

Show HN: Hacker News in Slow Italian - AI-generated podcast (with code) There are plenty of podcasts to listen to some slow basic Italian, but often they just talk about random things I'm not that interested in. Nothing a few hours of tinkering with Python cannot solve these days! Introducing Hacker News in Slow Italian. Each episode is generated automatically, using GPT4 API to summarise the top articles on Hacker News and then fed to Play.ht for text-to-speech. The (very short) code is available on Github: https://bit.ly/3IBPUBK https://bit.ly/3IBPVpi May 25, 2023 at 05:58PM

Show HN: One-paragraph summaries of the most important news happenings on Earth https://bit.ly/3BU12pR

Show HN: One-paragraph summaries of the most important news happenings on Earth https://bit.ly/3q2YWky May 25, 2023 at 08:32PM

Show HN: Collaborative recipe manager for iOS, built with SwiftUI and Firebase https://bit.ly/3MB9zml

Show HN: Collaborative recipe manager for iOS, built with SwiftUI and Firebase I initially created Umami for my family. We'd been using a giant google sheet of recipes that my wife made (one recipe per tab plus a table of contents at the front), but the UX of that left much to be desired, especially on mobile. We also tried a bunch of other recipe apps like Paprika, Whisk, Mela, etc., but most of them don't let you create a shared collection of recipes without using the same login credentials, which we didn't want to share with extended family members. Anyways, I've steadily been working on Umami as a solo side project for about 3 years. At first, just my family and a few friends were using it, but now it's starting to get downloaded by other people. I'd love to get feedback here on what kinds of features would be helpful to y'all. Also happy to answer any questions about the tech stack. Thanks friends! https://bit.ly/45t4h55 May 25, 2023 at 06:37PM

Show HN: HN Follow – Follow Your Friends on HN https://bit.ly/42fqNvy

Show HN: HN Follow – Follow Your Friends on HN HN Follow lets you follow authors on Hacker News, and get email notifications when they post. It was inspired by alerthn.com and hnreplies.com. The app was built in an experimental style on Val Town. We’re trying to create a new web primitive that you can: 1. write like a function 2. run like a script 3. fork like a repo 4. install like an app This is our 5th iteration of this same “HN Follow” app. We launched the 3rd version here on Hacker News six months ago[1], but it was very kindly removed from the front page by dang in favor of us launching Val Town itself first, which we did in January[2]. We’re trying to strike the right balance between something you can use and install with one click, and something you can infinitely customize. For example, you could fork `@rodrigoTello.hnFollowApp`[3] and change the input parameter from authors to a generic query, like I do here[4] to get notifications whenever “val town” is mentioned on HN. In addition to emailing myself (via `console.email`), I also send a message to our team’s Discord. The possibilities are endless, but it can also be overwhelming. We’re trying to find the balance where we help you navigate the space of possible integrations, without limiting you the way a no-code tool would. We would really appreciate your guys’ feedback and suggestions! [1] - HN Follow, first launch: https://bit.ly/3TjeY2J [2] - Val Town launch: https://bit.ly/3Qz42OO [3] - `@rodrigotello.hnFollowApp`: https://bit.ly/43oZ2Bn [4] - My fork of hnFollow: https://bit.ly/43pGPUn https://bit.ly/3MCQ3pF May 25, 2023 at 03:29PM

Show HN: Take this 21-day email challenge to fix email issues https://bit.ly/3Wvcvpf

Show HN: Take this 21-day email challenge to fix email issues https://bit.ly/3OFXpv8 May 25, 2023 at 09:01AM

Show HN: Course: What Is Outbound Sales Why Is It Important? https://bit.ly/3MwWfzj

Show HN: Course: What Is Outbound Sales Why Is It Important? https://bit.ly/3MB6Id0 May 25, 2023 at 09:56AM

Show HN: Gis.chat – a Geospatial Community https://bit.ly/3omE6wh

Show HN: Gis.chat – a Geospatial Community Hi folks! I'm excited to show you gis.chat, a geospatial chat platform in both senses: a platform about geospatial topics and a geospatial platform itself, referencing the location of our communities. The setup is fairly simple and reproducible: a plain Zulip instance and a homepage with geospatial search capabilities. It seems almost trivial but it has some very nice features. I guess you should be familiar with Zulips stream/topic model to follow along ( https://bit.ly/43pkGWo ). The core idea is that there are city-specific streams (currently represented by a pin), but there could just as well be streams about points of interest, line geometries (e.g. a river) or polygons (e.g. national park). - Every local stream can have the same topics, e.g. "general", "news", "meetups", "jobs" etc. - With Zulip's search you can either search for a particular topic, e.g. "news" in a local stream or instead in all streams and have some kind of news feed of the community with "topic:news" - Once more communities are added, specific filters could be added, e.g. country-wise or by drawing your own area of interest - Eventually, for the ones who like, users could associate themselves with a local community in their profile or add there main location so one could not only search for the local communities but instead also for individuals There are many nice features in Zulip's pipeline that would foster gis.chat: - Further nesting of streams/topics - Semantic search If for example Zulip would allow for saving coordinates (or better an entire geometry) in the Postgres DB, with the help of PostGIS, Zulip's search could allow for bounding boxes (or custom geometries). Let me know if you have any kind of other ideas or feedback! https://bit.ly/3MAr1r2 May 23, 2023 at 07:24AM

Show HN: Yakread – An RSS reader powered by machine learning https://bit.ly/435tL6L

Show HN: Yakread – An RSS reader powered by machine learning This is a web-based reading app I've been working on since August. The main differentiator is that Yakread uses machine learning to rank the articles in your feed: as you click on articles from a particular RSS/newsletter subscription, other articles from that subscription will tend to be ranked higher in the future (via a bandit algorithm). Yakread also uses ML to recommend articles that other users have read, so your feed will have articles in it even before you sign up and add your own subscriptions. For the recommendations, I'm using the collaborative filtering implementation from Spark MLlib[1]. I model RSS feeds instead of individual articles: when you click an article, that counts as a "point" for that article's RSS feed; at recommendation time, the algorithm first selects an RSS feed to recommend, and then it picks one of the popular/recent articles from that feed. To counter popularity bias, I have a pre-ranking step that probabilistically filters out RSS feeds that have already been recommended a lot. I manually approve all RSS feeds before they're eligible to be recommended. In addition to scrolling through the algorithmic feed, you can read articles chronologically on the subscriptions page, which I sometimes prefer when I have a larger chunk of reading time. There's also a daily digest email that lists new articles from your subscriptions; skimming that is part of my morning routine. I find the whole system gives me a nice balance between algorithmic filtering and manual control. This is the culmination of the past four years I've spent as a full-time bootstrapped founder; Yakread both scratches a personal itch and attempts to fix various deficiencies that my previous businesses have had. In a nutshell, I've come to believe that "discovery is a feature, not a product," which is why Yakread is a full reading app instead of a standalone recommender system like my previous products.[2] From a business perspective, the recommendation algorithm is primarily intended to help onboard new users quickly/easily. More ideologically, I think RSS is ready for a comeback :). [1] https://bit.ly/3MTxcYJ... -- I'm using the implicit feedback setting. [2] Show HN for Yakread's immediate predecessor, The Sample: https://bit.ly/3h1CcKK . The Sample does bring in $1k or so per month, but long-term retention is too low for me to grow it sustainably. https://bit.ly/3MRSdmu May 24, 2023 at 06:29PM

Show HN: I made a Chrome extension to hide history in ChatGPT https://bit.ly/43pmHC0

Show HN: I made a Chrome extension to hide history in ChatGPT https://bit.ly/3q05IYi May 24, 2023 at 12:15PM

Show HN: Mental Models for Startup Founders https://bit.ly/41ZxRMp

Show HN: Mental Models for Startup Founders Hello HN, I launched Wingify/VWO (Visual Website Optimizer) here on HN in 2010. The initial momentum and feedback I got from this place was a key reason I was able to profitably bootstrap the company to roughly ~$30MN ARR. Over the last 2 years, I have been writing a book for startup founders that's informed by my experience with Wingify and many failed attempts before it. It's finally done, so thought of launching it on the same forum where it all started for me :) There are a total of 68 mental models covering various aspects of building a startup: - Choosing markets - Building products - Ecosystems and partners - Thinking about Moats - Approaching marketing - B2B v/s B2C - Hiring & culture Unlike other books, I'm not sharing my story and neither take a very prescriptive approach. Rather, I use mental models to shine light and provide a tractable way of looking at problems an entrepreneur encounters during her startup. I understand that entrepreneurship cannot be systemized, but I'm hoping some of the mental models I share help in clearer thinking and faster decisions. Would love your feedback on the book: https://bit.ly/45wriUz... If you find it useful, please share it with others in your network. https://bit.ly/3BVbWLK May 24, 2023 at 07:27AM

Show HN: Defguard – open-source security army knife (Identity,MFA,VPN,Yubikey) https://bit.ly/3WyeUzB

Show HN: Defguard – open-source security army knife (Identity,MFA,VPN,Yubikey) https://bit.ly/3BQY9pt May 24, 2023 at 11:27AM

Show HN: Dark Mode for HN https://bit.ly/3MQCSCP

Show HN: Dark Mode for HN https://bit.ly/3MTWGoY May 24, 2023 at 09:41AM

Show HN: JavaScript Office Library: View and Convert Word, Excel, PowerPoint https://bit.ly/3OvEqn3

Show HN: JavaScript Office Library: View and Convert Word, Excel, PowerPoint Hi HN, Igor here. We’re super excited to officially launch PSPDFKit for Web Standalone’s Office-to-PDF functionality ( try the demo [0] ). PSPDFKit for Web Standalone is a JavaScript document library that runs entirely in the browser - no external dependencies or MS Office licenses required. It’s compatible with any JavaScript framework. What differentiates our Office-to-PDF from others is that it’s built from the ground up with no reliance on open source. When converting to the PDF format, it enables additional document capabilities, like page manipulation, redaction, or editing content. Office document capabilities [1]: - View and open Word, Excel, and PowerPoint files - Convert to PDF, PDF/A, or PNG - Print - Preview Office-to-PDF capabilities [1]: - Edit content - Annotate - Assemble multiple documents - Manipulate pages - Create and fill forms - Add signatures - Redact content Our documentation includes sample code [2] and quickstarts for JavaScript [3], React [4], Vue.js [5], Angular [6], SharePoint [7], and others. Let us know what you think or if you have any questions. [0] https://bit.ly/3ojdJr3 [1] https://bit.ly/3OAbg6m [2] https://bit.ly/43fTwB4 [3] https://bit.ly/3q9bvLu [4] https://bit.ly/3BS6NnI [5] https://bit.ly/3pX165c [6] https://bit.ly/43nlHho [7] https://bit.ly/43ijvYE May 23, 2023 at 10:10AM

Show HN: MrScraper AI – Dead simple web scraper (powered by AI) https://bit.ly/3ooqzUO

Show HN: MrScraper AI – Dead simple web scraper (powered by AI) I've decided to test a new approach in my web scraping app. What do you think? https://bit.ly/3BPx2v5 May 23, 2023 at 08:20AM