Show HN: HelixDB Explorer – A macOS GUI for HelixDB https://ift.tt/RQAkhiI

Show HN: HelixDB Explorer – A macOS GUI for HelixDB https://ift.tt/ySEvPGW February 20, 2026 at 11:18PM

Show HN: A small, simple music theory library in C99 https://ift.tt/8Xb75DL

Show HN: A small, simple music theory library in C99 https://ift.tt/NpKdaE5 February 20, 2026 at 04:24AM

Show HN: Hi.new – DMs for agents (open-source) https://ift.tt/GJpWvuR

Show HN: Hi.new – DMs for agents (open-source) https://www.hi.new/ February 20, 2026 at 02:50AM

Show HN: Astroworld – A universal N-body gravity engine in Python https://ift.tt/FctZTqp

Show HN: Astroworld – A universal N-body gravity engine in Python I’ve been working on a modular N-body simulator in Python called Astroworld. It started as a Solar System visualizer, but I recently refactored it into a general-purpose engine that decouples physical laws from planetary data.Technical Highlights:Symplectic Integration: Uses a Velocity Verlet integrator to maintain long-term energy conservation ($\Delta E/E \approx 10^{-8}$ in stable systems).Agnostic Architecture: It can ingest any system via orbital elements (Keplerian) or state vectors. I've used it to validate the stability of ultra-compact systems like TRAPPIST-1 and long-period perturbations like the Planet 9 hypothesis.Validation: Includes 90+ physical tests, including Mercury’s relativistic precession using Schwarzschild metric corrections.The Planet 9 Experiment:I ran a 10k-year simulation to track the differential signal in the argument of perihelion ($\omega$) for TNOs like Sedna. The result ($\approx 0.002^{\circ}$) was a great sanity check for the engine’s precision, as this effect is secular and requires millions of years to fully manifest.The Stack:NumPy for vectorization, Matplotlib for 2D analysis, and Plotly for interactive 3D trajectories.I'm currently working on a real-time 3D rendering layer. I’d love to get feedback on the integrator’s stability for high-eccentricity orbits or suggestions on implementing more complex gravitational potentials. https://ift.tt/Ee0cjKS February 20, 2026 at 01:27AM

Show HN: Wakapadi – Meet locals and travelers nearby and join free walking tours https://ift.tt/BnUX1pl

Show HN: Wakapadi – Meet locals and travelers nearby and join free walking tours Hi HN, I built Wakapadi after noticing that most travel tools focus on planning trips, but not on actually helping people connect once they arrive somewhere new. When traveling, it’s often hard to meet locals or other travelers unless you already know someone, join organized tours, or rely on chance. I wanted to make discovery more natural — seeing who’s nearby, joining free walking tours, and exploring cities together. Wakapadi currently allows users to: discover free walking tours see nearby travelers and locals who are open to meeting connect and chat before meeting explore cities in a more social way The project is still early, and I’m especially interested in feedback on: safety and privacy expectations what would make you comfortable meeting people while traveling features that would make this genuinely useful instead of another travel app Happy to answer any technical or product questions. https://ift.tt/vML98P7 February 18, 2026 at 11:40PM

Show HN: I'm launching a LPFM radio station https://ift.tt/lRImzXi

Show HN: I'm launching a LPFM radio station I've been working on creating a Low Power FM radio station for the east San Fernando Valley of Los Angeles. We are not yet on the broadcast band but our channel will be 95.9FM and our range can been seen on the homepage of our site. KPBJ is a freeform community radio station. Anyone in the area is encouraged to get a timeslot and become a host. We make no curatorial decisions. Its sort of like public access or a college station in that way. This month we launched our internet stream and on-boarded about 60 shows. They are mostly music but there are a few talk shows. We are restricting all shows to monthly time slots for now but this will change in the near future as everyone gets more familiar with the systems involved. All shows are pre-recorded until we can raise the money to get a studio. We have a site secured for our transmitter but we need to fundraise to cover the equipment and build out costs. We will be broadcasting with 100W ERP from a ridgeline in the Verdugos at about 1500ft elevation. The site will need to be off grid so we will need to install a solar system with battery backup. We are planning to sync the station to the transmit site with 802.11ah. I've built all of our web infrastructure using Haskell, NixOS, Terraform, and HTMX: https://ift.tt/1xYoVqZ This is a pretty substantial project involving a bunch of social and technical challenges and a shoe string budget. I'm feel pretty confident we will pull it off and make it a high impact local radio station. The station is managed by a 501c3 non-profit we created. We are actively seeking fundraising, especially to get our transmit site up and running. If you live in the area or want to contribute in any way then please reach out! https://www.kpbj.fm/ February 18, 2026 at 01:45AM

Show HN: AsteroidOS 2.0 – Nobody asked, we shipped anyway https://ift.tt/5lendAE

Show HN: AsteroidOS 2.0 – Nobody asked, we shipped anyway https://ift.tt/l8kR0pi February 18, 2026 at 12:54AM

Show HN: I curated 130 US PDF forms and made them fillable in browser https://ift.tt/Qd3v5Su

Show HN: I curated 130 US PDF forms and made them fillable in browser Hi HN! I built SimplePDF 7 years ago, with the vision from day one to help get rid of bureaucracy (I'm from France, I know what I'm talking about) Fast forward to this week where I finally released something I had on my mind for a long time: a repository of the main US forms that are ready to be filled, straight from the browser, as opposed to having to find a PDF tool online (or local). I focused on healthcare, ED, HR, Legal and IRS/Tax for now. On the tech-side, it's SimplePDF all the way down: client-side processing (the data / documents stay in your browser). I hope you find the resource useful! NiP https://ift.tt/reWZTcz February 18, 2026 at 12:03AM

Show HN: Nerve: Stitches all your data sources into one mega-API https://ift.tt/5enHZNG

Show HN: Nerve: Stitches all your data sources into one mega-API Hi HN! Nerve is a solo project I've been working on for the last few years. It's a developer tool that stitches together data from multiple sources in real-time. A lot of high-leverage projects (AI or otherwise) involve tying data together from multiple systems of record. This is easy enough when the data is simple and the sources are few, but if you have highly nested data and lots of sources (or you need things like federated pagination and filtering), you have to write a lot of gnarly boilerplate that's brittle and easy to get wrong. One solution is to import all your data into a central warehouse and just pull it from there. This works, but 1) you need a warehouse, 2) you have an extra copy of the data that can get stale or inconsistent, 3) you need to write and manage pipelines/connectors (or outsource them to a vendor), and 4) you're adding an extra point of failure. Nerve lets you write GraphQL-style queries that span multiple sources; then it goes out and pulls from whatever source APIs it needs to at query-time - all your source data stays where it is. Nerve has pre-built bindings to external SAAS services, and it's straightforward to hook it into your internal sources as well. Nerve is made for individual developers or two-pizza teams who: -Are building agents/internal tools -Need to deal with messy data strewn across different systems -Don't have a data team/warehouse at their disposal, (or do, but can't get a slice of their bandwidth) -Want to get to production as quickly as possible Everything you see in the demo is shipped and usable, but I'm adding a little polish before I officially launch. In the meantime, if you have a project you'd like to use Nerve on and you want to be a beta user, just drop me a line at mprast@get-nerve.com (it's free! I'll just pop in from time to time to ask you how it's going and what I can improve :) ) If you want to get an email when Nerve is ready from prime-time, you can sign up for the waitlist at get-nerve.com. Thanks for reading! (EDIT: Nerve is desktop only! I'll put up a gate on the site saying as much.) https://ift.tt/mRuogij February 15, 2026 at 04:37AM

Show HN: AsdPrompt – Vimium-style keyboard navigation for AI chat responses https://ift.tt/QPaSFtg

Show HN: AsdPrompt – Vimium-style keyboard navigation for AI chat responses I use Claude throughout the day and kept getting annoyed by the same thing: selecting text from responses with the mouse. Overshoot, re-select, copy, click input, paste. Especially bad in long conversations where you want to reference something from 30 turns ago. asdPrompt is a Chrome extension that adds hint-based navigation (like Vimium) to AI chat interfaces. Cmd+Shift+S activates the overlay, hint labels appear next to every text block. Type a letter to select a block, then keep typing to drill down: block → sentence → word. Enter copies, or you can press an action key (e, d, x) to inject a follow-up prompt ("elaborate on [selection]") directly into the chat input. Works on claude.ai, chatgpt.com, and gemini.google.com. Adapts to light/dark themes. Free. Built the initial MVP in 2 days using Claude Code — the adapter architecture, NLP segmentation pipeline, and Playwright test harness would have taken a month without it. Tech details for the curious: site-specific DOM parsers behind an adapter interface, text segmentation via compromise.js with regex fallbacks for technical content (paths, camelCase break NLP libraries), bounding rectangles calculated via Range API + TreeWalker, overlay isolated in Shadow DOM. Tested with Playwright visual regression. The landing page has an interactive tutorial where you can try the full drill-down mechanic without installing. Happy to talk about the implementation. https://asdprompt.com/ February 16, 2026 at 10:58PM

Show HN: Please hack my C webserver (it's a collaborative whiteboard) https://ift.tt/YU8G5M2

Show HN: Please hack my C webserver (it's a collaborative whiteboard) Source code: https://ift.tt/u7Otw2F https://ced.quest/draw/ February 16, 2026 at 12:27AM

Show HN: An open-source extension to chat with your bookmarks using local LLMs https://ift.tt/6eNA5li

Show HN: An open-source extension to chat with your bookmarks using local LLMs I read a lot online and constantly bookmark articles, docs, and resources… then forget why I saved them. Also was very bored on Valentines, so I built a browser extension that lets you chat with your bookmarks directly, using local-first AI (WebLLM running entirely in the browser). The extension downloads and indexes your bookmarked pages, stores them locally, and lets you ask questions. No server, no cloud processing, everything stays on your machine. Very early but it works and planning to add a bunch of stuff. Did I mentioned is open-source, MIT licensed? https://ift.tt/MOtixdn February 15, 2026 at 10:31PM

Show HN: Microgpt is a GPT you can visualize in the browser https://ift.tt/WXZkdMi

Show HN: Microgpt is a GPT you can visualize in the browser very much inspired by karpathy's microgpt of the same name. it's (by default) a 4000 param GPT/LLM/NN that learns to generate names. this is sorta an educational tool in that you can visualize the activations as they pass through the network, and click on things to get an explanation of them. https://ift.tt/KHJqQnx February 16, 2026 at 12:10AM

Show HN: GitHub "Lines Viewed" extension to keep you sane reviewing long AI PRs https://ift.tt/smEZ0JR

Show HN: GitHub "Lines Viewed" extension to keep you sane reviewing long AI PRs I was frustrated with how bad a signal of progress through a big PR "Files viewed" was, so I made a "Lines viewed" indicator to complement it. Designed to look like a stock Github UI element - even respects light/dark theme. Runs fully locally, no API calls. Splits insertions and deletions by default, but you can also merge them into a single "lines" figure in the settings. https://ift.tt/CTHEFiB February 14, 2026 at 12:49AM

Show HN: Azazel – Lightweight eBPF-based malware analysis sandbox using Docker https://ift.tt/ADuCTlz

Show HN: Azazel – Lightweight eBPF-based malware analysis sandbox using Docker Hey HN, I got frustrated with heavy proprietary sandboxes for malware analysis, so I built my own. Azazel is a single static Go binary that attaches 19 eBPF hook points to an isolated Docker container and captures everything a sample does — syscalls, file I/O, network connections, DNS, process trees — as NDJSON. It uses cgroup-based filtering so it only traces the target container, and CO-RE (BTF) so it works across kernel versions without recompilation. It also has built-in heuristics that flag common malware behaviors: exec from /tmp, sensitive file access, ptrace, W+X mmap, kernel module loading, etc. Stack: Go + cilium/ebpf + Docker Compose. Requires Linux 5.8+ with BTF. This is the first release — it's CLI-only for now. A proper dashboard is planned. Contributions welcome, especially around new detection heuristics and additional syscall hooks. https://ift.tt/lRLu0H9 February 15, 2026 at 12:37AM

Show HN: Data Engineering Book – An open source, community-driven guide https://ift.tt/X5ftUC4

Show HN: Data Engineering Book – An open source, community-driven guide https://ift.tt/cDJl6RW February 14, 2026 at 03:05AM

Show HN: Moltis – AI assistant with memory, tools, and self-extending skills https://ift.tt/HiZg3X0

Show HN: Moltis – AI assistant with memory, tools, and self-extending skills Hey HN. I'm Fabien, principal engineer, 25 years shipping production systems (Ruby, Swift, now Rust). I built Moltis because I wanted an AI assistant I could run myself, trust end to end, and make extensible in the Rust way using traits and the type system. It shares some ideas with OpenClaw (same memory approach, Pi-inspired self-extension) but is Rust-native from the ground up. The agent can create its own skills at runtime. Moltis is one Rust binary, 150k lines, ~60MB, web UI included. No Node, no Python, no runtime deps. Multi-provider LLM routing (OpenAI, local GGUF/MLX, Hugging Face), sandboxed execution (Docker/Podman/Apple Containers), hybrid vector + full-text memory, MCP tool servers with auto-restart, and multi-channel (web, Telegram, API) with shared context. MIT licensed. No telemetry phoning home, but full observability built in (OpenTelemetry, Prometheus). I've included 1-click deploys on DigitalOcean and Fly.io, but since a Docker image is provided you can easily run it on your own servers as well. I've written before about owning your content ( https://ift.tt/bAU6w2t ) and owning your email ( https://ift.tt/Qpj8tum ). Same logic here: if something touches your files, credentials, and daily workflow, you should be able to inspect it, audit it, and fork it if the project changes direction. It's alpha. I use it daily and I'm shipping because it's useful, not because it's done. Longer architecture deep-dive: https://ift.tt/n6JxMg4... Happy to discuss the Rust architecture, security model, or local LLM setup. Would love feedback. https://www.moltis.org February 13, 2026 at 12:45AM

Show HN: rari, the rust-powered react framework https://ift.tt/9PsBtCr

Show HN: rari, the rust-powered react framework https://rari.build/ February 13, 2026 at 12:45AM

Show HN: Pgclaw – A "Clawdbot" in every row with 400 lines of Postgres SQL https://ift.tt/d1Z478B

Show HN: Pgclaw – A "Clawdbot" in every row with 400 lines of Postgres SQL Hi HN, Been hacking on a simple way to run agents entirely inside of a Postgres database, "an agent per row". Things you could build with this: * Your own agent orchestrator * A personal assistant with time travel * (more things I can't think of yet) Not quite there yet but thought I'd share it in its current state. https://ift.tt/cgWH7yr February 12, 2026 at 11:12PM

Show HN: Unpack – a lightweight way to steer Codex/Claude with phased docs https://ift.tt/uv8XihO

Show HN: Unpack – a lightweight way to steer Codex/Claude with phased docs I've been using LLMs for long discovery and research chats (papers, repos, best practices), then distilling that into phased markdown (build plan + tests), then handing those phases to Codex/Claude to implement and test phase by phase. The annoying part was always the distillation and keeping docs and architecture current, so I built Unpack: a lightweight GitHub template plus docs structure and a few commands that turns conversations into phases/specs and keeps project docs up to date as the agent builds. It can also generate Mintlify-friendly end-user docs. There are other spec-driven workflows and tools out there. I wanted something conversation-first and repo-native: plain markdown phases, minimal ceremony, easy to adapt per stack. Example generated with Unpack (tiny pokedex plus random monsters): Demo: https://apresmoi.github.io/pokesvg-codex/ Phases index: https://ift.tt/NO6AqMH... I’d love feedback on what the “minimum good” phase/spec format should be, and what would make this actually usable in your workflow. -------- Repo: https://ift.tt/xtSWjI1 https://ift.tt/xtSWjI1 February 12, 2026 at 01:17AM