Show HN: Rmux – A programmable terminal multiplexer with a Playwright-style SDK Author here. RMUX started from a frustration: I've used tmux for years and got tired of scraping output with grep and sleeps to automate anything. So I rebuilt the m…

Show HN: SafeRun – Replay debugging and inline prevention for AI agents 3 Background on why we built Replay first instead of validation: [ https://ift.tt/sV67gmy... ] Working SDK in Python and TypeScript. Sub-50ms p95 on the check-action API. Curr…

Show HN: IResearch – C++ search that beat Lucene and Tantivy on their benchmark https://ift.tt/UHv4uPW May 20, 2026 at 03:21AM

Show HN: Typeset sitelen pona and copy a PNG (for toki pona speakers) https://sitelen.vercel.app/ May 17, 2026 at 09:41AM

Show HN: The AI Quant Desk for Onchain Finance Most Web3 tools only track basic balances and approximate wallet data. Raster brings TradFi accounting rigor to DeFi through a unified Truth, Risk, and Decision Intelligence framework. Our proprietary a…

Show HN: Noxu DB, a Rust Port of Berkeley DB Java Edition Noxu provides ACID transactions, a log-structured B+tree, checkpoint-based crash recovery (ARIES), master-replica(s) replication, and XA. I have always admired the design and engineering beh…

Show HN: Id-agent – Token efficient UUID alternative for AI agents https://ift.tt/PzRcAfo May 19, 2026 at 04:16AM

Show HN: Resilient, A composable async resilience toolkit for rust Resilient is an async toolkit for rust that handles fault tolerance for your rust Apps that often call other services or database queries frequently. Resilient supports rate limitin…

Show HN: Eazip – Password-protected ZIPs (AES-256) in the browser, no upload https://www.eazip.ch/ May 18, 2026 at 09:02AM

Show HN: Auto-identity-remove – Automated data broker opt-out runner for macOS https://ift.tt/ClifhjY May 18, 2026 at 04:32AM

Show HN: Files.md – open-source alternative to Obsidian https://ift.tt/FvgjYGu May 18, 2026 at 06:33AM

Show HN: Forecasting my backyard weather with a 22M time-series model https://ift.tt/f5EV1SU May 17, 2026 at 08:08AM

Show HN: Semble – Code search for agents that uses 98% fewer tokens than grep Hey HN! We (Stephan and Thomas) recently open-sourced Semble. We kept running into the same problem while using Claude Code on large codebases: when the agent can't fi…

Show HN: I made a printable graph papaer templates website https://ift.tt/fGVoCj2 May 17, 2026 at 07:56AM

Show HN: Serene Bach – a Go weblog engine that runs as CGI or HTTP I originally made Serene Bach in the 2000s as a weblog engine written in Perl CGI. I rebuilt it from scratch in Go as a single binary that can run either as a CGI program or as a nor…

Show HN: Infinite Swap – Trade a bottle cap up to a house Hey HN, Infinite Swap is a game inspired by Kyle MacDonald’s One Red Paperclip and other bigger-and-better swap stories - you start with a green bottle cap and trade it with other characters …

Show HN: Swpui, a TUI for case-aware search and replace Presentation article: https://ift.tt/sLFplUJ Codeberg mirror: https://ift.tt/0ylrhz1 I've been working on a TUI to suit my terminal IDE workflow after I noticed the most promising alter…

Show HN: Mailenc – Test if your PGP email setup works https://mailenc.org/ May 15, 2026 at 02:56AM

Show HN: Find the best local LLM for your hardware, ranked by benchmarks https://ift.tt/WaiT1A8 May 15, 2026 at 02:19AM

Show HN: GlycemicGPT – Open-source AI-powered diabetes management I'm a Type 1 diabetic and software engineer. Last year I went months between endocrinologists with no clinician reviewing my data. I'm an engineer, so I built the tool I neede…

Show HN: I solved my study problems by talking to a goose I used to study by rereading notes, and then I blanked in the exam hall. Did some research, and found that my experience isn’t isolated, and that passive review doesn’t force retrieval, so no…

Show HN: ChangeSpec – An open standard for notices in software changes https://changespec.org/ May 14, 2026 at 02:41AM

Show HN: Running the second public ODoH relay Every privacy-focused DNS service requires an account: NextDNS, Cloudflare for Families, Apple's iCloud Private Relay (paid, iOS-only). The protocol that doesn’t require one - ODoH - had basically on…

Show HN: Claude-pee: use Claude -p without the programmatic usage credit pool Anthropic announced today that starting June 15, paid Claude plans get a separate monthly credit pool for programmatic usage (claude -p, Agent SDK). Seems OK at first glan…

Show HN: I asked AI to write Sci-Fi for eternity https://ift.tt/BZGdFik May 13, 2026 at 03:26AM

Show HN: Hollow – A local multi-agent OS that builds its own tools https://ift.tt/SXBFGEo May 13, 2026 at 03:19AM

Show HN: HYPD – AI co-pilot for marketers running Google Ads We've been building HYPD for the last 1 year together with a small team in Berlin. It's an AI co-pilot (chatbot) for PPC freelancers and agencies. It connects to a Google Ads acco…

Show HN: Java/Spring Boot Idempotency Library Idempotency4j is a Java idempotency library with pluggable storage backends and Spring Web / Spring Boot support. This library solves the problem of ensuring that sensitive endpoints do not trigger side-…

Show HN: Affordable Survey Software Hi, I built Survser as a more affordable survey / user research solution because I found existing tools to be bloated and unnecessarily expensive. Hope someone finds it useful. https://ift.tt/mfpeTHv May 12, 2026 …

Show HN: Tessera – Turn coding agent sessions into structured work https://ift.tt/ET9qgte May 11, 2026 at 09:58PM

Show HN: I built a fair-price checker App for home repairs using BLS wage data Show HN: I built a fair-price checker App for home repairs using BLS wage data. https://ift.tt/ny184QR May 12, 2026 at 12:37AM

Show HN: AI Agents in 30 Lines of YAML: Lowdefy v5.3 https://ift.tt/XAW8pB5 May 11, 2026 at 03:29AM

Show HN: An addictive phone game about phone addiction I recently prototyped a web game for a nonprofit to highlight the dangers of phone addiction, but unfortunately I ended up making a really addictive game instead. :-\ I'm sharing this here m…

Show HN: Groxy – a Go library for building forward proxy servers https://ift.tt/tfz94YL May 11, 2026 at 01:28AM

Show HN: DialYourShot – interactive espresso parameter tool https://ift.tt/Ir3bjk8 May 11, 2026 at 12:57AM

Show HN: An index of indie web/blog indexes I saw a comment here about how there are so many indexes of indie sites, blogs, etc but there wasn't an index of all the indexes. So I built it. It doesn't require a log in, just go browse! I'v…

Show HN: ASCII pixel art editor for the terminal feast your eyes https://ift.tt/wSqsyV0 May 10, 2026 at 03:12AM

Show HN: Free Google Places API alternative using OpenStreetMap (no API key) https://bizdata-web.vercel.app May 10, 2026 at 12:26AM

Show HN: nocal is a calendar that turns your week into a workspace https://nocal.app/ May 9, 2026 at 04:48AM

Show HN: Concord – Feature rich TUI for discord Concord is TUI client for discord with discord like layout (Servers / Channels / Messages / Members), vim keys, inline image previews via Kitty/iTerm2/Sixel, reactions, polls, threads, forums, and more…

Show HN: Transformer Math Explorer https://ift.tt/BTHuCF9 May 9, 2026 at 03:28AM

Show HN: Nanorust – Minimal server-driven UI in Rust https://ift.tt/UzehOqP May 8, 2026 at 09:25PM

Show HN: NanoCorp – Create autonomous companies run by AI https://www.nanocorp.so May 8, 2026 at 05:19AM

Show HN: Corsproxy – Fix CORS Errors Instantly – Free for Development https://corsproxy.io/ May 8, 2026 at 01:21AM

Show HN: Runs AI coding agents inside isolated Docker containers https://ift.tt/lHTAnpg May 8, 2026 at 12:46AM

Show HN: Password-less authentication via Ramanujan's 1/π series and Nvidia-B200 https://ift.tt/OZCpI45 May 6, 2026 at 10:47PM

Show HN: Trust – Coding Rust like it's 1989 https://ift.tt/4ORjUPD May 6, 2026 at 10:58PM

Show HN: Adam – An embeddable cross-platform AI agent library https://ift.tt/Okb6emU May 6, 2026 at 05:56AM

Show HN: Migrate your Evernote archive to Google Drive or local files https://ift.tt/vdS90OA May 6, 2026 at 03:23AM

Show HN: Red Squares – GitHub outages as contributions https://red-squares.cian.lol/ May 6, 2026 at 03:28AM

Show HN: Rdprrap – Rust Port of RDPWrap (Multi-Session RDP for Windows Desktop) https://ift.tt/9al0fMj May 6, 2026 at 12:30AM

Show HN: Got tired of paying $100/mo for SEO tools, so I built an alternative https://ift.tt/PhHb7Gc May 5, 2026 at 02:57AM

Show HN: Brainio – Markdown notepad that turns notes into visual mind maps https://brainio.com/ May 5, 2026 at 12:28AM

Show HN: Retroguard – Verifiably secure AI guardrails Cryptographically secure and verifiably robust protection with drop-in integration and outcome-based pricing https://retroguard.ai May 4, 2026 at 10:28PM

Show HN:Privacy-First Pdf Converter https://privapdf.net May 4, 2026 at 06:55AM

Show HN: Let – Offline-first life events tracker (React Native, SQLite) https://ift.tt/90vRBcn May 4, 2026 at 06:53AM

Show HN: I built a RISC-V emulator that runs DOOM Hi HN, I built a RISC-V emulator that implements the RV32IM instruction set and a minimal syscall interface to run DOOM. A few weeks ago, I got my first output with a simple hello world assembly prog…

Show HN: I built a tool that helps predict HN front page success Hey HN community, I built a tool that helps optimize your post for hitting the first page of Show HN. How it works: I used a Hugging Face dataset of all Hacker News posts from the past…

Show HN: Apple's Sharp Running in the Browser via ONNX Runtime Web https://ift.tt/IQ8tOng May 3, 2026 at 02:14AM

Show HN: Enoch – Control Plane for Autonomous AI Research I built Enoch after working with OpenClaw and trying to get an agentic coding system setup with Codex. In the past, I was trying to manually generate, code, and test this all manually. Then -…

Show HN: Large Scale Article Extract of Newspapers 1730s-1960s Hello HN, over the past 7 months I've spent nearly 3,000 hours on building SNEWPAPERS, the first historical newpaper archive with full-text extractions, nearly perfect OCR, a vast ca…

Show HN: Hollow is an open-sourced self-modifying agentic system https://ift.tt/YXBd4oO May 2, 2026 at 12:43AM

Show HN: I built a context layer for our home Rosey started as a grocery list. My wife and I kept losing track of which phone the list was on. So I built a number we could both text, a shared little assistant that just remembered. Once it remembered…

Show HN: WhatCable, a tiny menu bar app for inspecting USB-C cables USB-C cables can be a mess. One cable charges at 5W, another does 100W and Thunderbolt 4, and they look identical in the drawer. WhatCable sits in your menu bar and reads the cable …

Show HN: Self hosted video feed for children As a patent I don’t want my child to be on social media. In the same time I don’t want to miss some of the experience. So I came with an idea - why not create a “social network” for my child, that is easy…