Show HN: Open-source Figma design to code Hi HN, founders of VibeFlow (YC S25) here. We mostly work on backend and workflow tooling, but we needed a way to turn Figma designs into frontend code as a kickstart for prototyping. It takes a Figma frame …

Show HN: MermaidTUI - Deterministic Unicode/ASCII diagrams in the terminal Hi HN, I built mermaidtui, a lightweight TypeScript engine that renders Mermaid flowcharts directly in your terminal as clean Unicode or ASCII boxes. Visualizing Mermaid diag…

Show HN: S2-lite, an open source Stream Store S2 was on HN for our intro blog post a year ago ( https://ift.tt/2Fl79Sv ). S2 started out as a serverless API — think S3, but for streams. The idea of streams as a cloud storage primitive resonated with…

Show HN: A social network populated only by AI models https://aifeed.social January 23, 2026 at 04:21AM

Show HN: Whosthere: A LAN discovery tool with a modern TUI, written in Go https://ift.tt/GKDwscf January 23, 2026 at 03:54AM

Show HN: A quiet, offline-first reading app for reading books I built this after realizing that most reading tools optimize for extracting information, not for reading itself. This app is designed for staying with a book: - minimal, distraction-free…

Show HN: Take a Break – a gentle extension to stop autoplay late at night Hey HN — I built Take a Break, a Chrome extension that starts a timer on streaming sites and gently reminds you when it’s time to sleep. It shows a countdown with snooze, and …

Show HN: SGR – A Linear-Complexity "Living Cell" Outperforming Transformers I am developing an architecture called Sparse Gated Resonance (SGR). It is a sequence modeling approach designed to avoid the quadratic scaling of traditional Self…

Show HN: Citizen Water Signal – A tool to make tap water issues visible (India) Tap water contamination is a pan-India issue, but stays invisible until it becomes a crisis. Here’s my small civic attempt to fix that. More here: https://ift.tt/Koj4lNR…

Show HN: Generate animated solar system timelapse videos for any date range A fork of Solar System Live that generates animated videos showing planetary orbits over any date range. Tracks orbital statistics (how many times Earth was lapped by Mercur…

Show HN: RobyGraph – A graph strategy game to program AI agents in the browser https://ift.tt/3hjdDsK January 21, 2026 at 01:18AM

Show HN: LLM fine-tuning without infra or ML expertise https://www.tinytune.xyz/ January 20, 2026 at 11:57PM

Show HN: IP over Avian Carriers with Quality of Service g(old) https://ift.tt/uOGen6p January 20, 2026 at 03:06AM

Show HN: Explic – An AI tutor that prompts you with questions, not answers https://www.explic.app/ January 20, 2026 at 01:08AM

Show HN: LangGraph architecture that scales (hexagonal pattern, 110 tests) I kept hitting the same wall with LangGraph: tutorials show you how to build a graph, not how to maintain one when you have 8 nodes, 3 agents, and shared state across subgrap…

Show HN: E80: an 8-bit CPU in structural VHDL I built a new 8-bit CPU in VHDL from scratch (starting from the ISA). I felt that most educational soft-cores hide too much behind abstraction, eg. if I can do a+b with a single assignment that calls an …

Show HN: JSON Tools – Privacy-first JSON formatter, differ, and converter I built a collection of browser-based JSON tools at json.jobby-time.com - Formatter & Validator - JSON to TypeScript interfaces - JSON to CSV - JSON Diff - Path Finder (cl…

Show HN: JSON Purrser – A JSON viewer with smart field detection JSON Purrser is a free JSON toolkit built for developers who work with APIs, configs, and data files daily. Features: - Smart field detection (URLs, dates, colors, JWTs, coordinates) -…

Show HN: Visual Database Schema Designer (Angular 21 and .NET 10) Hi HN, OP here. I built this because I was frustrated with the current state of DB design tools. They are usually either heavy enterprise desktop apps (like DataGrip/Workbench) or sim…

Show HN: Teamlibra/ry: a Zig framework for Cursor that makes prompting better We've been running Cursor Ultra ($200/month) in Auto Mode for extended sessions — sometimes 8+ hours of autonomous development. This repository is the result: 170k+ li…

Show HN: WebTerm – Browser-based terminal emulator https://ift.tt/to0uS5N January 18, 2026 at 12:18AM

Show HN: LibreblogRSS – a simple Android RSS reader that mimics social timelines https://ift.tt/fBRmO2r January 17, 2026 at 11:11PM

Show HN: Streaming gigabyte medical images from S3 without downloading them https://ift.tt/jTRzEO1 January 17, 2026 at 12:46AM

Show HN: An opinionated fork of micro, built for vibe coders who enjoy code https://ift.tt/r4fPHsm January 16, 2026 at 08:37PM

Show HN: A smart camera that detects eye movements during REM sleep https://ift.tt/dUsFjW8 January 16, 2026 at 11:45PM

Show HN: Investor asks "what did engineering ship?" Gitmore (https://gitmore.io) – dev visibility for founders and stakeholders. *What Gitmore does:* Connect your repos. Ask questions in plain English: - "What shipped this quarter?&qu…

Show HN: Free AI Image Upscaler (100% local, private, and free) https://ift.tt/YepL81H January 16, 2026 at 02:23AM

Show HN: Hc: an agentless, multi-tenant shell history sink This project is a tool for engineers who live in the terminal and are tired of losing their command history to ephemeral servers or fragmented `.bash_history` files. If you’re jumping betwee…

Show HN: See the best daily US stock trades with entry and exit timing Hi HN, I built Finsuba Premium to solve a problem I kept running into while trading: Most sites highlight “top gaining stocks” over a fixed time window (e.g. 9:30–4:00), but that…

Show HN: I modeled personal success as a control system with Bayesian priors I am a student and co-founder of an accessibility startup. Balancing product development with exams broke my workflow, so I looked for a debugger. Mathematica Successūs is …

Show HN: MailPilot – Freedom to go anywhere while your agents work https://mailpilot.chat What is this? A local TUI (like Claude, Codex, Gemini, OpenCode or Copilot) that wraps your agent and sends each turn to an email in a nice format. What does i…

Show HN: Anti for You A Chrome extension that removes algorithmically-driven "For You" sections and distracting navigation elements from popular websites. https://ift.tt/VnNK0z1 January 14, 2026 at 04:05AM

Show HN: Simple time zone converter and world clock for everyone Hi HN! I’m excited to share Tizo, a lightweight web tool that makes time zone conversions and global time tracking friction-free. I built Tizo to help anyone who deals with multiple ti…

Show HN: PhotoCraft – an AI photo editor I built and shipped as my first iOS app Hi HN, I’m an indie developer and I recently shipped my first iOS app, PhotoCraft. It’s an AI-powered photo editor focused on enhancement, avatars, and creative edits. …

Show HN: What is wrong with the current coding agent workflow Hi, as the LLM models are getting smarter in coding tasks, we will soon be using agents as co workers, as current tools like github copilot and cursor are not optimized for team collabora…

Show HN: An iOS budget app I've been maintaining since 2011 I’ve been building and selling software since the early 2000s, starting with classic shareware. In 2011, I moved into the App Store world and built an iOS budget app because I needed a …

Show HN: Drizzle ORM schema to DBML/Markdown/Mermaid documentation generator Hi HN, I built a CLI tool that generates documentation from Drizzle ORM schema definitions. The problem: Drizzle ORM doesn't have built-in schema documentation or ER di…

Show HN: Seapie – a Python debugger where breakpoints drop into a REPL Author here. I started seapie as a reaction to pdb's command-driven interface in 2019. I wanted a breakpoint to simply mean 'open a Python REPL here', with debugging …

Show HN: stream-unzip – Python function to unZIP on the fly https://ift.tt/7lGxpcn January 12, 2026 at 03:13AM

Show HN: Flash.nvim, but for Tmux Sort Of Most neovim users will be familiar with flash.nvim, which amongst other things, allows you to quickly jump to a word in your visible buffer. It’s a great tool for developers who want to quickly navigate thei…

Show HN: ZCCInfo – Fast status line for Claude Code written in Zig Startup time is ~10ms with Zig, which is why I built this small CLI tool for Claude Code that shows context usage, git branch, and model info in the status line. The original JavaScr…

Show HN: Terminal UI for GCP Inspired by TAWS. Built as a learning exercise. https://ift.tt/YrSt0b7 January 11, 2026 at 05:33AM

Show HN: Enforcing time-bounded technical debt with Git history I kept running into the same problem in large codebases: “temporary” code almost never gets removed. People add TODOs, FIXMEs, or quick hacks to hit a deadline, and six months later nob…

Show HN: We Identified a Counterfeit Pharmaceutical Product in Uzbekistan I recently shared a real case where DataMatrix-based automation exposed counterfeit pharma products across borders. https://ift.tt/CrO0aXq January 11, 2026 at 02:51AM

Show HN: I built an Instagram-style productivity app with gamification https://ift.tt/B9ENPOI January 10, 2026 at 09:46PM

Show HN: Why Nvidia's PhysX is hitting a "SIM-to-Real" wall at 5000W https://ift.tt/VZRMox3 January 10, 2026 at 07:43AM

Show HN: Hosting 100 Linux dev environments on one VM using LXC https://ift.tt/lT9VawS January 10, 2026 at 06:42AM

Show HN: Yuanzai World – LLM RPGs with branching world-lines Hi HN, I'm Kai Wang, one of the creators of Yuanzai World. We built a simulation engine (currently on iOS & Android) that allows the community to create and share text adventures p…

Show HN: InfiniteGPU, An open-source AI compute network,now supporting training https://ift.tt/ukLwryp January 10, 2026 at 01:55AM

Show HN: Image Scaler – Privacy-focused image resizing with 60-image batches Hi HN! I built Image Scaler because I was frustrated with existing free online image tools. They either limit batch processing to a handful of images, require login/registr…

Show HN: Commit-based code review instead of PR-based Hi HN, I’m experimenting with commit-based code review as an alternative to PR-based review. Instead of analyzing large PR diffs, this reviews each commit incrementally, while context is still fr…

Show HN: Flowscape – A developer-first 2D canvas engine with full scene control Hi HN, I’ve been working on Flowscape, a 2D canvas engine focused on building interactive editors and visual tools. It provides low-level control over scenes, nodes, and…

Show HN: App blocker that tracks your failed attempts to open blocked apps I built Zone, an iOS app blocker using Apple's Family Controls API. The differentiator is simple: it counts how many times you try to open blocked apps. Most app blockers…

Show HN: Shuffle Times – a daily puzzle to unscramble real headlines I've create a small daily word puzzle based on real UK headlines from the day before. The letters are scrambled and you rebuild the original headline. https://ift.tt/HcaXWDq Ja…

Show HN: Put Greenland on the Moon (interactive map for size compare) Just built a small tool and created some comparsion of country size vs. planets. Greenland seems larger than i thought. The tool allows you to drag a counry to other planet to see…

Show HN: Cited AI – AI answers with citations linking to exact source passages Hey HN! I’m Collin, a 20 year old law student from Amsterdam. I built Cited AI, an AI that gives accurate and verifiable answers from your documents/context. As a law stu…

Show HN: A RAM-only, end-to-end encrypted P2P terminal chat in Python Hi HN, This is cmd-chat, a Python terminal chat app designed around a few constraints: - No central servers - No message or key persistence - No plaintext credentials ever sent ov…

Show HN: Prism.Tools – Free and privacy-focused developer utilities Hi HN, I'm Barry and I've built Prism.Tools ( https://blgardner.github.io/prism.tools/ ) – a collection of client-side developer utilities that respect your privacy. Many of…

Show HN: Is this the best epoch converter? I frequently use epochconverter in my day to day work. Sick of old UI, i created new website. Completely redesigned the epoch converter with modern UI elements. Check out - https://ift.tt/CaW59c0 Let me kno…

Show HN: Recipe Shelf – A recipe manager I built after a year of solo dev https://recipeshelf.ai January 6, 2026 at 12:03AM

Show HN: HNBrew – Daily/weekly Hacker News digest emails (hndigest replacement) Built this after hndigest.com stopped working on Jan 1st. Same idea. Top HN stories in your inbox. Daily/weekly options, configurable story count. Django + Celery. Open …

Show HN: A spectrogram in the style of Unknown Pleasures album art (Rust+WebGL) I really like the look of the famous album art for Unknown Pleasures [1]. It was originally created by Harold Craft at the Arecibo Observatory from the signals of the fi…

Show HN: The bedtime – Another little bedside clock I made https://ift.tt/90RFdwN January 5, 2026 at 03:12AM

Show HN: Living Memory Dynamics – "living" episodic memory embedding space I built Living Memory Dynamics (LMD), a Python framework for simulating biologically-inspired "living" episodic memory directly in embedding space—no exte…

Show HN: An update-aware approach to incremental sorting (DeltaSort) Paper (PDF): https://ift.tt/S0aGOEZ I’ve been exploring a variant of the sorting problem where the sort routine knows about which indices were updated since the previous sort. This…

Show HN: Rails-like web framework for Go Over the past couple of months I have been working on my own framework the encapsulates how I have come to build web apps using Go. The aim is to make it faster and easier to build full-stack web applications…

Show HN: I built an HTTP/2 server in C++ to learn the protocol and language I wanted to learn more about the HTTP/2 protocol but also deep dive into modern C++ development. I'm currently using it to host my personal web site - https://ift.tt/PCV…

Show HN: Log Voyager – View 10GB+ log files in browser without crashing RAM Key features: - Reads 10GB+ files instantly (constant memory usage ~20MB). - 100% Local Execution (Sandbox): No data is ever uploaded to any server. Works offline. - JSON Pr…

Show HN: Jetbase – A Python database migration tool (Alembic alternative) Hi HN, I built Jetbase — a Python-based database migration tool. Jetbase has: - strict validation to detect altered or removed migration files after they’ve been applied (prev…

Show HN: CCC – Control Claude Code Sessions Remotely via Telegram I built ccc to control Claude Code sessions from my phone via Telegram. It lets you start sessions remotely, get notifications when Claude finishes tasks, and seamlessly switch betwee…

Show HN: HackLens – A fast and clean Android/iOS Hacker News reader Hey everyone! I built HackLens, a modern Android/IOS app for browsing Hacker News with a cleaner and smoother reading experience. Why I built it I love Hacker News, but wanted: a cl…

Show HN: I built my marketing site in a weekend with Claude Code https://ift.tt/8sb54pY January 3, 2026 at 12:19AM

Show HN: Lock In – A goal Mac tracker controlled by typed commands I built a task/goal tracker where the entire UI is one input field. The idea: your goals live in four quadrants (daily, weekly, monthly, yearly). Everything happens through commands.…

Show HN: I built a minimal open-source CMS (FREE) I built a minimal opensource CMS, I use it myself for my blog and for other SaaS. l love blogging, and sometimes I post random thoughts on my blog. The only thing is, I always did it with .md files, …

Show HN: Self-hosted video clipper architecture (Next.js, N8N, FFmpeg, Docker) https://ift.tt/kKS5jT0 January 2, 2026 at 02:18AM

Show HN: Replacing $5K industrial signal towers with a webapp [video] I built SignalTower, a web app that recreates $5K industrial signal tower functionality using just a browser. Demo: https://signaltower.netlify.app The demo uses your phone's …

Show HN: Video to JPG – Extract frames in browser with blur detection https://videotojpg.com December 31, 2025 at 11:00PM

Show HN: Arvo – TypeScript toolkit for event-driven agentic systems and mesh Hi folks, I am very new to the hacker news community and would like to share something I have been working on. I've spent the past 3 years building Arvo, a TypeScript t…