Companies tracked by Rails Radar

Hiring signals with observed stack evidence. Showing 577–624 of 1439 · page 13 of 30.

I built a zero click file converter for Mac 0 open listings

discussion=https://news.ycombinator.com/item?id=49610648, title=Show HN: I built a zero click file converter for Mac, It lets you convert files just by holding shift and dragging the file. also has other useful file modification tools.
I built an AI 'Fog of War' for life goals 0 open listings

discussion=https://news.ycombinator.com/item?id=49646265, title=Show HN: I built an AI 'Fog of War' for life goals
I built an AI 'Fog of War' to kill my 3AM Notion templates 0 open listings

discussion=https://news.ycombinator.com/item?id=49645780, title=Show HN: I built an AI 'Fog of War' to kill my 3AM Notion templates
I built an AI Agent that sell itself 0 open listings

discussion=https://news.ycombinator.com/item?id=49646702, title=Show HN: I built an AI Agent that sell itself, Quick bit of context: SendRoq is a LinkedIn automation tool. Before the AI era (pre-2021), I ran a marketing agency. Back then, client acquisition on LinkedIn was all manual. Once AI agents started becoming a thing, I built one for my agency's internal use, never intended to sell it. It worked really well for us. A few colleagues and partners kept pushing me to turn it into a SaaS. I said no, we were already profitable running the agency, why complicate things. Then a few weeks later, I was on an onboarding call with a new client, and he asked, "How did you guys know I was looking for marketing help?" I told him straight up: we have an AI agent that analyzes LinkedIn profiles and picks up on signals. If someone comments, engages, or posts anything hinting they're looking for marketing, it flags it and reaches out. He got interested immediately and wanted to buy the agent for his own sales team, was ready to pay well for it. I told him it wasn't public, not for sale. He pushed back: "So make it a SaaS." That conversation is basically what got the ball rolling. A few months later we actually started building it out. The hardest part, unsurprisingly, was getting our first users. Our GTM was pretty meta: we used our own tool to book meetings with potential customers and sell them directly.
I built an app that does social media publishing work for me 0 open listings

discussion=https://news.ycombinator.com/item?id=49730129, title=Show HN: I built an app that does social media publishing work for me
I built an infinite canvas for game masters 0 open listings

discussion=https://news.ycombinator.com/item?id=49695871, title=Show HN: I built an infinite canvas for game masters, Over a year ago, I asked the internet how they organize their computers to run tabletop roleplaying games. As a game master, I found myself alt-tabbing a lot trying to find PDFs and browser windows and tabs I kept open and losing momentum in my games. The universal answer to my question was "get another monitor" which I didn't find acceptable. I was always a fan of apps like Figma and Miro where you could place arbitrary objects on an infinite canvas, so I built Overseer Studio to help me and other game masters stay organized behind the screen. Overseer lets game masters place websites, PDFs, apps, and anything else on an infinite canvas. They can add shortcuts to find information easily and even build custom plugins to support any number of game systems. I built the app using Electron, XState, Pixi.js, and React. Almost everything is hand-coded because I believe that tools that support tabletop roleplaying games are meant to be an extension of the games themselves; an ever pursuit of creativity. Interested to know what you think!
I built an interactive Harry Potter learning playground for my son 0 open listings

discussion=https://news.ycombinator.com/item?id=49617789, title=Show HN: I built an interactive Harry Potter learning playground for my son, Built this for my son. Started as a collection of Harry Potter book covers and grew into an interactive browser project with covers from 12 countries, small games, spells, daily lessons, and connections to real science.
I built my own knowledge graph from the code AI writes 0 open listings

discussion=https://news.ycombinator.com/item?id=49684835, title=Show HN: I built my own knowledge graph from the code AI writes
I bypassed my Claude Code deny-list 8 ways; only an allow-list held 0 open listings

discussion=https://news.ycombinator.com/item?id=49658005, title=Show HN: I bypassed my Claude Code deny-list 8 ways; only an allow-list held
I combined Marc Lou's TrustMRR and IndiePage for free. I wanted it 0 open listings

discussion=https://news.ycombinator.com/item?id=49669126, title=Show HN: I combined Marc Lou's TrustMRR and IndiePage for free. I wanted it, I wanted to use both of his products for my personal profile. TrustMRR is too focused on buying and selling products. IndiePage is not free and does not have many features or controls. So, I vibe-coded my own combination of both. Not too blob and not too micro. I vibe-coded in 3 days, plus one day to polish. I made it for free, but there are sponsor spots on free profiles. You can always remove those by purchasing a lifetime plan, but it's not necessary. I was also trying to make my first internet dollar, so I took this as my opportunity.
I couldn't afford interview prep, so I built a free alternative 0 open listings

discussion=https://news.ycombinator.com/item?id=49643992, title=Show HN: I couldn't afford interview prep, so I built a free alternative
I created a list of projects with embeds 0 open listings

discussion=https://news.ycombinator.com/item?id=49649676, title=Show HN: I created a list of projects with embeds, Hi HN! I created a pet project that I’d like to share with you. It’s a project catalog, but it has a cool feature. It generates badges for each project that you can add to your website or readme, and they will work. Right now, there aren’t many badges, but I plan to add a few more (I just don’t know which ones yet). I would be very grateful if you could share some ideas in the comments about what could be added. Also, what do you think of the website design? EmbedCatalog is open to your projects! Thanks! I would appreciate your feedback ^ ^
I created a platform that lets you own a word. a piece of the Internet 0 open listings

discussion=https://news.ycombinator.com/item?id=49624381, title=Show HN: I created a platform that lets you own a word. a piece of the Internet
I created a search engine to quickly find things in my source code 0 open listings

discussion=https://news.ycombinator.com/item?id=49631258, title=Show HN: I created a search engine to quickly find things in my source code, I like to reuse code I've already written. But with so many projects over the many years, it's sometimes hard to remember which project I did a given thing in or even what the parameters of a rarely used Win32 API function are. I needed something that could easily find what I needed without the slowness of a recursive grep (especially since my projects can span many different locations in the filesystems and even many different computers/OSes) or the increasing difficulty in getting what you want from search engines on the internet. This search engine implements TF-IDF and BM25 algorithms. It has both C TUI programs and a web interface via a node.js server which accesses the daemons. It's written for Windows and Linux. The user can use whatever flow they want - one-shot query vs. daemon (client/server), commandline tools vs web interface, secure vs. non-secure, etc. This project also serves as (IMHO) a rather good example of all sorts of things such as socket programming, OpenSSL programming, node.js programming, JSON processing, etc.
I created a translation service prompt 0 open listings

discussion=https://news.ycombinator.com/item?id=49647151, title=Show HN: I created a translation service prompt, I am in the process of learning European Portuguese because I moved to Portugal. I was having significant friction with Google Translate, so I started giving more and more instructions to Gemini Flash to create a powerful, low-friction experience when getting translations between English and EU Portuguese. This became a generally-powerful prompt that can serve any language combination, so I posted it to github. I haven't tried it with any other model providers yet. Let me know what you think!
I developed a non-linear video editing system 0 open listings

discussion=https://news.ycombinator.com/item?id=49743744, title=Show HN: I developed a non-linear video editing system
I forked JetBrains' new agent IDE to host Claude Code 0 open listings

discussion=https://news.ycombinator.com/item?id=49741832, title=Show HN: I forked JetBrains' new agent IDE to host Claude Code, ThinkRail is JetBrains' open-source IDE shell for AI coding agents: worktree-per-tab, chat + file tree + terminal, but hardwired to one agent (Pi). My fork adds a plugin API so it can host others too, starting with Claude Code running in the same UI. What's new over upstream: - A prototype of real plugin system - Claude Code as a first-class citizen — config, IDE bridge, and terminal status all wired in as a builtin plugin, so you get Claude Code sessions in the same worktree-scoped UI as `pi`. - Seven other builtin plugins split out the same way: blueprint (interactive specs), PDF preview, branch graph, a live drawing/visualize surface, and file-type icons Nightly builds via a Homebrew tap are provided.
I found a weird old startup's LaserDisc 0 open listings

discussion=https://news.ycombinator.com/item?id=49618172, title=Show HN: I found a weird old startup's LaserDisc, I don't know anything about the company (other than the fact that it went kaput in the mid 90s) or the product. Anyone here happen to know anything about it? (Weirder things have happened!)
I graded 200 AI tools/apps and track any changes in their policies 0 open listings

discussion=https://news.ycombinator.com/item?id=49642791, title=Show HN: I graded 200 AI tools/apps and track any changes in their policies, Hi all, Given the recent OpenAI saga with the Navier–Stokes problem, I thought it would be a good time to show my latest project. The site pulls policies from 200+ websites, keeps track of them and compares them to any changes. I then grade the companies (A-F + Unclear) and I have emailed all of the companies that have been graded D or below. Where applicable, such as with OpenAI, I've provided instructions on how users can opt-out of their data being used for training. Findings of note so far: - 80 tools train on you by default. 55 don't let you opt-in and four do, but you have to pay.
I licensed $50k of stock market data to do analysis Claude can't 0 open listings

discussion=https://news.ycombinator.com/item?id=49646392, title=Show HN: I licensed $50k of stock market data to do analysis Claude can't, Hello HN. I’ve been using Claude to summarize stock news and some basic analysis for some time now, but results were only ever based off of web searches so I never really anything insanely useful out of it. The big breakthrough came when I properly acquired my 90+ datasets (worth over $50,000), and connected it to my data analysis agent harness to do my investment research. What it does: ask anything across the NYSE/NASDAQ, schedule agents to alert me on market or price changes, intrinsic value calculations, and investment research (pull from news or historical and current earnings, fundamentals, or holdings/insider/politician trades). Just launched on Product Hunt too, and if this was interesting at all, would appreciate an upvote. Questions and feature requests welcome. Really excited about this and appreciate any feedback from yall.
I made Artle 0 open listings

discussion=https://news.ycombinator.com/item?id=49607890, title=Show HN: I made Artle – a quick, daily art guessing game, Made this game some years ago after wordle blew up and it has very slowly gathered some returning players. Guess the artist, if you’re wrong you see more of the painting. Round 2 is year, round 3 is art style. Hope the difficulty level is alright.
I made a flight simulator, except you're just a passenger 0 open listings

discussion=https://news.ycombinator.com/item?id=49693971, title=Show HN: I made a flight simulator, except you're just a passenger, Buckle your seatbelt, secure your tray table, and open your window shade. Now you can simulate flying anywhere in the world as a commercial passenger, from takeoff to touchdown. Terrain, weather, and realtime sun position included. Don't worry, the latest release now features legs, so you can get up and go to the bathroom on longer flights. Enjoy!
I made a moving map of SF's trains in real time 0 open listings

discussion=https://news.ycombinator.com/item?id=49613971, title=Show HN: I made a moving map of SF's trains in real time
I made a product 0 open listings

discussion=https://news.ycombinator.com/item?id=49615364, title=Show HN: I made a product – turn your text into social media carousel posts, It took me a month to build this, all content creators, educators, turn your article, blogs to stunning carousels with Carouslide.
I made a tiny MoE/Engram viz tool 0 open listings

discussion=https://news.ycombinator.com/item?id=49690947, title=Show HN: I made a tiny MoE/Engram viz tool, As part of a ML study group I've been building tools to experiment with ML concepts. I use AI Coding agents to develop software, mostly cloud-based but I keep trying local LLMs on 12G, 16G, and 24G VRAM GPUs. Freetoken has made it possible to run larger MoE models on smaller GPUs. This inspired me to use my ML tools to build a tiny MoE model from scratch so I can experiment with different agent optimizations and things like Engram, recursive models, hierarchical modeles, KV Cache compression etc. My link above shows results of building different tiny models, one dense, the rest MoE variants. There is a lot of code and tooling behind this. Goals: - build tiny MoE models that run in a browser to give interactive help (today I use deterministic matchers to respond to user queries; still researching how to improve this with better trained MoE models). - build tiny MoE models that run on small ARM and RISC-V development boards, possibly using NPUs (using no_std Rust). My tools are an alternative to Python, ML libraries, Jupyter notebooks, and Google Colab. My approach is a REPL and/or AOT Compilable array-programming DSL written in Rust. This language has ML concepts as first class language elements and built in visualization primitives. It runs in a browser via WASM. It runs at the CLI on both Apple and Linux (supporting Apple GPU and NVIDIA GPU libraries, Ollama-based REPL context-senstive help). It is extensible via dyamic plug-in Rust libraries. I have created many demo repos showing how to use this ML array language for ML tasks, learning Math concepts, general purpose programming. You can build desktop apps, (Ruby on Rails inspired) CRUD apps. So you can create ML experiments and visualize data in the browser or on the desktop. It also supports Emacs org-mode for literate programming. This tiny MOE Microscope is just my latest demo of this approach. I hope it helps someone learn more about MoE experts, routing, Engram, etc. It helped me learn more.
I made a tool that help your product to get next users from everywhere 0 open listings

discussion=https://news.ycombinator.com/item?id=49739119, title=Show HN: I made a tool that help your product to get next users from everywhere, Just type in your website, then leave it to DROP
I made an 8 bit game that teaches beginners to pwn basic C programs 0 open listings

discussion=https://news.ycombinator.com/item?id=49712697, title=Show HN: I made an 8 bit game that teaches beginners to pwn basic C programs, I've been hosting small CTF for my alma mater high school every summer for the last few years, usually in the form of a sequence of website-based challenges that students could complete in an hour or two. This year, now that LLMs are startingly more capable (and people claiming CTFs are dead), I wanted to see if I could design challenges in a way that would minimize the ability to "drag and drop" them into a simple chat window and have it be solved for you, and at minimum require some intuition and interaction from the players. Seeing how bad frontier models were at the ARC AGI 3 benchmark (this pre-Astra), I thought it would be fun to translate aspects of pwning a program to spatial game-based mechanics and try to have some of the "reasoning" happen in the game world instead of all in code. This resulted in challenges where they have to interact with code to change parameters in the game to solve puzzles. While players do have to read code, the game expects no prior knowledge of C programming specifically, and tries to explain concepts such as structs, byte hex encoding, null-terminated strings, endianness, etc. from scratch. It has 10 rooms and builds up to the player being made to do a buffer overflow to clear the final room. There are items the player acquires to inspect source code, see program memory, and translate raw bytes to unsigned 4-byte ints or ASCII strings. There are still some gaps in the ramp up that could be better filled in and might require more hand-holding for complete beginners (I am thinking of adding an item that explains basic C semantics such as variables, conditionals, loops, I/O etc. when you directly hover over the code in the computer). Would love feedback from people here!
I made an alternative to the archived filebrowser 0 open listings

discussion=https://news.ycombinator.com/item?id=49679761, title=Show HN: I made an alternative to the archived filebrowser
I made an automated day-by-day itinerary organizer for my trip to Spain 0 open listings

discussion=https://news.ycombinator.com/item?id=49689049, title=Show HN: I made an automated day-by-day itinerary organizer for my trip to Spain, For my solo food pilgrimage to the Basque Country, I pre-arranged flights in/out of Bilbao, Guggenheim Museum tickets, Michelin Guide restaurant reservations, bus tickets to San Sebastian and Saint-Jean-de-Luz, walking food tours and hotel reservations in each city, and a long list of pintxo spots to hit with notes on each one's food specialty. Most of this was poorly organized (manually) in my phone's Notes app, with references to specific emails for more information. I arrived on the first day in Bilbao, and the hotel didn't have me in their system by name, so I spent a good 10 minutes frantically scouring my emails for the confirmation number, cursing myself for holding up the people behind me. Over the course of the next few days, while I was relaxing at my hotel (after finally getting in) in between pre-planned stops, I started building a personal tool that would organize all of my bookings automatically and keep all relevant information at my fingertips. Thus, Petrel was born and named after one of my favorite birds. It started as a personal pet project but I shared it with some friends that were looking for something just like it so I ended up turning it into an app and website for all to benefit. It's completely free to try without even signing up. On my next group trip, I built out logical collaboration features to allow groups to vote, split expenses, share notes, and add pictures all within the same ecosystem. I've slowly improved the parsing and itinerary logic and built in convenient features such as weather, estimated travel times, an encryption-protected area to store copies of personal information, and a comprehensive travel log with fun stats. I also made it so that the parsing tool can accept almost any file type. However, the tool doesn't do anything to assist on the planning side and doesn't provide true flight alert pushes, despite having live flight status syncing. I would love for more people to test it out, challenge the parser, and let me know their thoughts and experience.
I made an unlimited TikTok video generator to get views on the internet 0 open listings

discussion=https://news.ycombinator.com/item?id=49692990, title=Show HN: I made an unlimited TikTok video generator to get views on the internet, I got tired of all the expensive and complicated ways of making tiktok videos to promote my app (like using higgsfield or paying strangers $20 to act surprised on video), so I built somewhere you can paste any viral tiktok or Instagram reels URL to get your own version of the video + unlimited ai generations If anyone wants to poke around and tell me what you think, you can find it at --> cloney.app. It's intuitive and there's no complicated setup. Just paste a tiktok URL. PS try not to use it for porn AI inference backend built on modal and hosted on vercel
I measured what newborns can see and built videos around it 0 open listings

discussion=https://news.ycombinator.com/item?id=49623898, title=Show HN: I measured what newborns can see and built videos around it
I pointed 11 cold AI agents at my own product. 3 finished 0 open listings

discussion=https://news.ycombinator.com/item?id=49654075, title=Show HN: I pointed 11 cold AI agents at my own product. 3 finished
I ported COLMAP (photogrammetry) to the browser in WASM and WebGPU 0 open listings

discussion=https://news.ycombinator.com/item?id=49715142, title=Show HN: I ported COLMAP (photogrammetry) to the browser in WASM and WebGPU, Hi, I’m launching the COLMAP browser workspace today! offlinetools.io/colmap It’s a free and fully local browser implementation of the popular open-source photogrammetry software COLMAP. No download, no sign-up, no installation, no setup, no cloud processing — everything happens and stays on the user’s machine. More info: offlinetools.io/colmap-landing Why is it relevant? Bringing COLMAP to the browser is technically challenging because of the browser’s additional constraints. This is the first implementation that reaches native-class performance and, in some cases, even outperforms the native build. It produces standard COLMAP-compatible outputs such as camera poses, sparse point clouds, keypoints and masks for downstream workflows including Gaussian Splatting. The local nature of this tool makes it ideal for data-sensitive verticals such as police, medical, law enforcement, insurance, or simply users who want the tool but don't want to bother with installs and cloud. About me: I’m a former Google engineer with around 20 years of experience in 3D computer vision.
I rebuilt a 4-year-old app in 5 days using many agents 0 open listings

discussion=https://news.ycombinator.com/item?id=49700102, title=Show HN: I rebuilt a 4-year-old app in 5 days using many agents – here's harness
I rewrite my game while it is still running 0 open listings

discussion=https://news.ycombinator.com/item?id=49625715, title=Show HN: I rewrite my game while it is still running
I solved a 12yr math problem using AI (formalized; awaiting review) [pdf] 0 open listings

discussion=https://news.ycombinator.com/item?id=49717545, title=Show HN: I solved a 12yr math problem using AI (formalized; awaiting review) [pdf]
I turn Airtable exports into real Postgres schemas(FKs, not CSVs) 0 open listings

discussion=https://news.ycombinator.com/item?id=49669672, title=Show HN: I turn Airtable exports into real Postgres schemas(FKs, not CSVs)
I turned a 25 year old web platform into a HATEOAS multi-agent system 0 open listings

discussion=https://news.ycombinator.com/item?id=49639183, title=Show HN: I turned a 25 year old web platform into a HATEOAS multi-agent system
I use AirPods as wireless IMUs to track discs, bowling balls and runs 0 open listings

discussion=https://news.ycombinator.com/item?id=49675673, title=Show HN: I use AirPods as wireless IMUs to track discs, bowling balls and runs
I vibe-coded a platformer you play by physically turning and jumping 0 open listings

discussion=https://news.ycombinator.com/item?id=49738380, title=Show HN: I vibe-coded a platformer you play by physically turning and jumping, In Orbit Hop, you control a hero with your body: turn to walk, jump to leap, and crouch to duck under obstacles. Explore three 3D platforming levels with branching paths, moving platforms, coins, enemies, and power-ups before taking on the Lava King.
I was frustrated with AI giving confident answer,Even when it was wrong 0 open listings

discussion=https://news.ycombinator.com/item?id=49692144, title=Show HN: I was frustrated with AI giving confident answer,Even when it was wrong
I won't give up on either AI or being a developer 0 open listings

discussion=https://news.ycombinator.com/item?id=49729397, title=Show HN:I won't give up on either AI or being a developer
I wrote a book on using AI in game design production (free on GitHub) 0 open listings

discussion=https://news.ycombinator.com/item?id=49671342, title=Show HN: I wrote a book on using AI in game design production (free on GitHub)
I wrote a custom assembler for CHIP-8 in C++ 0 open listings

discussion=https://news.ycombinator.com/item?id=49744174, title=Show HN: I wrote a custom assembler for CHIP-8 in C++, I'm writing a custom assembler for CHIP-8 and just finished adding support for the DB/.byte directive so I can embed sprites in the ROM and finally get something drawn on the screen. It SHOULD support all OG CHIP-8 instructions, but still a ton of rough edges that I'm ironing out. This is my first ever C++ project, just like the CHIP-8 emulator was my first ever C (and emudev) project. It's so satisfying to write assembly and have your program spit out a ROM that actually runs in the emulator you wrote. All code is written by me (a lot of it livestreaming) as evident by the quality, no AI.
I'm Serving Esp32s31.fun 0 open listings

discussion=https://news.ycombinator.com/item?id=49695744, title=Show HN: I'm Serving Esp32s31.fun, esp32s31.fun is an experiment to see how far it can go, maybe a week without crash/reboot?
I'm funding a $2,599 iPhone Duo w/ sales of apps I've built since 2008 0 open listings

discussion=https://news.ycombinator.com/item?id=49661436, title=Show HN: I'm funding a $2,599 iPhone Duo w/ sales of apps I've built since 2008
I'm not a PostgREST fan this is why I'm building an alternative 0 open listings

discussion=https://news.ycombinator.com/item?id=49630394, title=Show HN: I'm not a PostgREST fan this is why I'm building an alternative, Don't get me wrong, core PostgREST concept is good. But I do think that stuff like Haskell and PlSQL should not be used in production. This is why I came up with the idea to make my own API generation service.
I've Translated Linear Algebra Done Right by Axler to Hebrew 0 open listings

discussion=https://news.ycombinator.com/item?id=49609060, title=Show HN: I've Translated Linear Algebra Done Right by Axler to Hebrew