Show HN: A Prompt-Injection Firewall for AI Agents and RAG Pipelines https://ift.tt/AztLyWx
Show HN: A Prompt-Injection Firewall for AI Agents and RAG Pipelines We built SafeBrowse — an open-source prompt-injection f…
Show HN: A Prompt-Injection Firewall for AI Agents and RAG Pipelines We built SafeBrowse — an open-source prompt-injection f…
Show HN: A web-based lighting controller built because my old became a brick I’m a student and I built this because my old l…
Show HN: Fleet / Event manager for Star Citizen MMO I built an open-source org management platform for Star Citizen, a space…
Show HN: Claude Cognitive – Working memory for Claude Code https://ift.tt/A15gHrQ December 31, 2025 at 03:57AM
Show HN: Slide notes visible only to you during screen sharing https://cuecard.dev December 30, 2025 at 11:48PM
Show HN: Replacing my OS process scheduler with an LLM https://ift.tt/FVAc1LD December 30, 2025 at 10:17PM
Show HN: Aroma: Every TCP Proxy Is Detectable with RTT Fingerprinting TL;DR explanation (go to https://ift.tt/lpbz8WO... if …
Show HN: A solar system simulation in the browser I didn't realize Universe Sandbox ran on MacOS, and I was in the mood …
Show HN: Pion SCTP with RACK is 70% faster with 30% less latency SCTP is a low level protocol focused on reliable packet tra…
Show HN: AI 3D Model Generator https://ift.tt/9l3D8mE December 28, 2025 at 11:21PM
Show HN: I'm 15. I built an offline AI Terminal Agent that fixes errors https://ift.tt/tI1LQCD December 27, 2025 at 10:2…
Show HN: Jsonic – Python JSON serialization that works https://ift.tt/pEovCKZ December 27, 2025 at 07:26PM
Show HN: AgentFuse – A local circuit breaker to prevent $500 OpenAI bills Hey HN, I’ve been building agents recently, and I …
Show HN: Polibench – compare political bias across AI models Polibench runs the Political Compass questions across AI models…
Show HN: Web CLI – Browser-based terminal with multi-tab support Hey HN! Web CLI, an open-source web-based command managemen…
Show HN: Pivor, Open source self-hosted CRM I built Pivor because I wanted a simple, self-hosted CRM without cloud lock-in o…
Show HN: I created a tool to generate handwritten signatures At this time, I had to sign multiple documents (energy, gas, wa…
Show HN: Elfpeek – A tiny interactive ELF binary inspector in C https://ift.tt/deSJYwI December 24, 2025 at 11:08PM
Show HN: An open-source anonymizer tool to replace PII in PostgreSQL databases https://ift.tt/R1qs4DQ December 24, 2025 at 0…
Show HN: Full-text search engine for Epstein docs (OCR and OpenSearch) Hi HN, Like many people, I was frustrated that the re…
Show HN: Openinary – Self-hosted image processing like Cloudinary Hi HN! I built Openinary because Cloudinary and Uploadcare…
Show HN: A kids book that introduces authorization and permissions concepts A colleague and I made a kids' picture book …
Show HN: Meds — High-performance firewall powered by NFQUEUE and Go Hi HN, I'm the author of Meds ( https://ift.tt/PXtZB…
Show HN: Real-time SF 911 dispatch feed (open source) I built an open-source alternative to Citizen App's paid 911 feed …
Show HN: Mactop v2.0.0 https://ift.tt/mRM7YhI December 22, 2025 at 06:14AM
Show HN: Pac-Man with Guns Title really says it all on this https://pac-man-with-guns.netlify.app/ December 22, 2025 at 04:4…
Show HN: I built a 1‑dollar feedback tool as a Sunday side project I’ve always found it funny how simple feedback widgets en…
Show HN: HN Wrapped 2025 - an LLM reviews your year on HN I was looking for some fun project to play around with the latest …
Show HN: Music player for big local collections with mpd support mpz is a C++/Qt music player focused on UX, with derectory …
Show HN: MCPShark Viewer (VS Code/Cursor extension)- view MCP traffic in-editor A few days ago I posted MCPShark (a traffic …
Show HN: Stickerbox, a kid-safe, AI-powered voice to sticker printer Bob and Arun here, creators of Stickerbox. If AI were b…
Show HN: Linggen – A local-first memory layer for your AI (Cursor, Zed, Claude) Hi HN, Working with multiple projects, I got…
Show HN: TinyPDF – 3KB PDF library (70x smaller than jsPDF) I needed to generate invoices in a Node.js app. jsPDF is 229KB. …
Show HN: Explore Prometheus /metrics endpoints from your terminal https://ift.tt/VXqGvrJ December 18, 2025 at 11:40PM
Show HN: The feature gap "Chat with PDF" tuts and a regulated enterprise system I've spent the last few months…
Show HN: Solving the ~95% legislative coverage gap using LLM's Hi HN, I'm Jacek, the solo founder behind this projec…
Show HN: Zenflow – orchestrate coding agents without "you're right" loops Hi HN, I’m Andrew, Founder of Zencod…
Show HN: ModelGuessr: Can you tell which AI you're chatting with? Hey HN - I built ModelGuessr, a game where you chat wi…
Show HN: A lightweight SaaS to reduce early-stage app friction I recently shipped a small SaaS I built in roughly 24 hours, …
Show HN: A Wordle-style game for SHA-256 hashes i built a small wordle-style game where the target is a daily sha-256 hash. …
Show HN: 999 Penguins https://999penguins.com December 14, 2025 at 07:31PM
Show HN: Llmwalk – explore the answer-space of open LLMs https://ift.tt/NkCs1U0 December 14, 2025 at 10:14PM
Show HN: Open-source customizable AI voice dictation built on Pipecat Tambourine is an open source, fully customizable voice…
Show HN: Tic Tac Flip – A new strategic game based on Tic Tac Toe The biggest problem with Tic-Tac-Toe is that it almost alw…
Show HN: Soup.lua: making Lua do what it shouldn't https://ift.tt/e9xfK0E December 14, 2025 at 12:33AM
Show HN: PhenixCode – Added admin dashboard for multi-server management I built PhenixCode — an open-source, self-hosted and…
Show HN: I'm building an open-source Amazon I'm building an open source Amazon. In other words, an open source decen…
Show HN: ESLint Plugin for styled-jsx https://ift.tt/bETpORu December 12, 2025 at 11:44PM
Show HN: I used Gemini 3 to turn 42 books into interactive webpages in 2 weeks https://ift.tt/iewu1Ym December 12, 2025 at 1…
Show HN: An endless scrolling word search game I built a procedurally generated word-search game where the puzzle never ends…
Show HN: SIM – Apache-2.0 n8n alternative Hey HN, Waleed here. We're building Sim ( https://sim.ai/ ), an open-source vi…
Show HN: Cargo-rail: graph-aware monorepo tooling for Rust; 11 deps https://ift.tt/YZ264PL December 11, 2025 at 02:19AM
Show HN: I launched a podcast to interview makers For years I’ve wanted to start a podcast to interview curious and passiona…
Show HN: A 2-row, 16-key keyboard designed for smartphones Mobile keyboards today are almost entirely based on the 26-key, 3…
Show HN: Gemini 3 imagines Hacker News as a HyperCard stack in 1994 https://hyper-card-hacker-news.vercel.app/ December 10, …
Show HN: Advent of Back Ends Build AI Agents, Workflows, Backend systems live every day for 30 days. https://adventofbackend…
Show HN: Agentic Reliability Framework – Multi-agent AI self-heals failures Hey HN! I'm Juan, former reliability enginee…
Show HN: Fanfa – Interactive and animated Mermaid diagrams https://fanfa.dev/ December 4, 2025 at 06:46PM
Show HN: Edge HTTP to S3 Hi HN, Edge.mq makes it very easy to ship data from the edge to S3. EdgeMQ is a managed HTTP to S3 …
Show HN: Diesel-guard – Lint Diesel migrations for unsafe PostgreSQL patterns https://ift.tt/iu1Tkns December 8, 2025 at 10:…
Show HN : WealthYogi - Net worth Tracker Hey everyone I’ve been on my FIRE journey for a while and got tired of juggling spr…
Show HN: OpenFret – Guitar inventory, AI practice, and a note-detection RPG I'm a solo dev and guitarist who got frustra…
Show HN: Minimal container-like sandbox built from scratch in C Runbox recreates core container features without relying on …
Show HN: TapeHead – A CLI tool for stateful random access of file streams I wrote this tool while debugging a driver because…
Show HN: Manifesto – An AI-Native UI Framework Intent-to-State, Not Text-to-App Hi HN, I'm the creator of Manifesto AI. …
Show HN: AgentPG – Stateful AI Agents in Go with PostgreSQL Persistence https://ift.tt/OoikTBR December 6, 2025 at 11:07PM
Show HN: Bible Note Journal – AI transcription and study tools for sermons (iOS) I got back into church a couple years ago a…
Show HN: HCB Mobile – financial app built by 17 y/o, processing $6M/month Hey everyone! I just built a mobile app using Expo…
Show HN: SerpApi MCP Server https://ift.tt/KqsT8ct December 6, 2025 at 12:00AM
Show HN: Playwright for Windows Computer Use https://ift.tt/PEfxY36 December 5, 2025 at 04:15AM
Show HN: I Built an UI Library that lets you create beautiful UIs in Minutes Hello Everyone, My name is Karan, and I'm a…
Show HN: Cheap OpenTelemetry lakehouses with Parquet, DuckDB, and Iceberg Side project: exploring storing and querying OpenT…
Show HN: Fresh – A new terminal editor built in Rust I built Fresh to challenge the status quo that terminal editing must re…
Show HN: Golang Client Library for Gradium.ai TTS/STT API https://ift.tt/N9vwaJ1 December 3, 2025 at 01:22AM
Show HN: Meeting Detection – a small Rust engine that detects meetings on macOS I built a small open-source meeting detectio…
Show HN: SMART report viewer – Simple tool to analyze smartctl outputs https://ift.tt/kGzdB0w December 3, 2025 at 12:29AM
Show HN: Valknut – static analysis to tame agent tech debt Hi y'all, In my work to reduce the amount of time I spend in …
Show HN: RFC Hub I've worked at several companies during the past two decades and I kept encountering the same issues wi…
Show HN: An AI zettelkasten that extracts ideas from articles, videos, and PDFs Hey HN! Over the weekend (leaning heavily on…
Show HN: Memory Lane – bootstrap your naive Claude instances with their history https://ift.tt/jb4c285 December 1, 2025 at 0…
Show HN: I Built Tinyfocus – A Minimal Tool to Help Solo Founders Focus Hi HN, I just launched Tinyfocus, a small productivi…
Show HN: Unmarker.it – Client-Side Tool to Disrupt Invisible AI Watermarks I built a browser-only tool that disrupts invisib…
Show HN: I made a free log anonymizer in the browser https://ift.tt/6d7DqZm November 30, 2025 at 04:05AM
Show HN: No Environment Setups Anymore Hi everyone, for last 7 months, I have been learning all the attempts made to elimina…
Show HN: Zero-power photonic language model–code The model uses a 1024-dimensional complex Hilbert space with 32 layers of p…
Show HN:TaskHub – Update https://ift.tt/ja8AxLp November 29, 2025 at 01:09AM
Show HN: Local-first RAG for PDF user manuals, datasheets I work on embedded firmware for my day job, and I've found LLM…
Show HN: Design a commercial bakery in an afternoon, not for $10k Hi HN, I'm Rafael Mauricio, the founder of RF Modern B…
Show HN: Pulse 2.0 – Live co-listening rooms where anyone can be a DJ I wanted to listen to music with friends who live far …
Show HN: FounderPace – A leaderboard for founders who run https://ift.tt/NBFH2Rt November 28, 2025 at 05:18AM
Show HN: I built a free astro and tailwind static site for GitHub pages Using my GitHub pro+ with vs code setup This is a de…
Show HN: No Black Friday – A directory of fair-price brands The idea came from noticing how many brands inflate prices only …
Show HN: Infinite scroll AI logo generator built with Nano Banana https://ift.tt/3Rw8tND November 27, 2025 at 01:04AM
Show HN: Yolodex – real-time customer enrichment API hey hn, i’ve been working on an api to make it easy to know who your cu…
Show HN: Safe-NPM – only install packages that are +90 days old This past quarter has been awash with sophisticated npm supp…
Show HN: Fixing Google Nano Banana Pixel Art with Rust https://ift.tt/rXOSzpI November 26, 2025 at 09:16PM
Show HN: Secure private diffchecker with merge support Built a minimal diff checker with merge feature. 1. Supports 25K+ lin…
Show HN: Superglue – OSS integration tool that understands your legacy systems If you've ever worked in a large company,…
Show HN: I built an interactive HN Simulator Hey HN! Just for fun, I built an interactive Hacker News Simulator. You can sub…
Show HN: I built an interactive map of jobs at top AI companies I built a live interactive map that shows where top AI compa…
Show HN: Search tool for "Ask HN: What Are You Working On?" Hi all, I created a public dashboard for searching / c…
Show HN: Genesis DB now provides a full gRPC API alongside HTTP The Protobuf definition is published openly: https://ift.tt/…
Show HN: RealDeed – Tokenize Real Estate into Digital Assets RealDeed is MENA’s advanced real estate tokenization platform, …
Show HN: HN Insights – HN front page summaries Hi HN, Sharing HN Insights, a webapp I built that highlights trending themes …
Show HN: Forty.News – Daily news, but on a 40-year delay This started as a reaction to a conversational trope. Despite being…
Show HN: Santamon – Lightweight macOS threat detection agent a lightweight macOS detection agent that taps into Santa’s Endp…
Show HN: I made a Rust Terminal UI for OpenSnitch, a Linux application firewall I made a Terminal UI for OpenSnitch[1], an i…
Show HN: Even Turns, track your families turns I am a dad and have a hard time keeping track of who's turn it is, so I b…
Show HN: OCR Arena – A playground for OCR models I built OCR Arena as a free playground for the community to compare leading…
Show HN: City2Graph – Python Open Source for Geospatial Graph Neural Networks https://ift.tt/vmkAYnp November 22, 2025 at 12…
Show HN: A game where you invest into startups from history https://ift.tt/whfLQJa November 16, 2025 at 02:35AM
Show HN: MCP Traffic Analysis Tool https://ift.tt/rwvg2Q5 November 17, 2025 at 11:36PM
Show HN: F32 – An Extremely Small ESP32 Board As part of a little research and also some fun I decided to try my hand at see…
Show HN: PgEdge Control Plane, a declarative API for multi-region Postgres mgmt https://ift.tt/nxvRT5y November 20, 2025 at …
Show HN: I made a down detector for down detector After down detector went down with the rest of the internet during the Clo…
Show HN: Guts – convert Golang types to TypeScript https://ift.tt/85tMBFp November 18, 2025 at 11:25PM
Show HN: ToolHop – Fast, simple utilities for every workflow ToolHop is your all-in-one browser toolbox with 200+ fast-loadi…
Show HN: My Side project a free email template builder for CRM, or any website Hi Everyone, I built an email template builde…
Show HN: ResendForward – OS server and UI for use with Resend.com inbound With Resend's new inbound feature I wanted to …
Show HN: ZenPaint, a pixel-perfect MacPaint recreation for the browser I've been recreating the original MacPaint in the…
Show HN: An Apache Beam batch processing clone in Rust I've been experimenting with Apache Beam as of late at work and f…
Show HN: DeepClause – A Neurosymbolic AI System Built on WASM and Prolog Hi HN, Today I'd like to present the results of…
Show HN: ByteSync – Open-source hybrid file sync (LAN and remote, E2EE) Hi everyone, I've been developing ByteSync, an o…
Show HN: US Publicly Traded Companies probabilities of default with public data https://ift.tt/yvx9Zco November 14, 2025 at …
Show HN: DBOS Java – Postgres-Backed Durable Workflows Hi HN - I’m Peter, here with Harry (devhawk), and we’re building DBOS…
Show HN: LLM fine-tuning without infra or ML expertise (early access) https://www.tinytune.xyz/ November 14, 2025 at 12:33AM…
Show HN: Built a tiny interpreter from scratch in C to understand how they work Hi HN, I'm the author. I built this proj…
Show HN: JavaScript Engines Zoo https://ift.tt/DskWAga November 12, 2025 at 09:32PM
Show HN: Cancer diagnosis makes for an interesting RL environment for LLMs Hey HN, this is David from Aluna (YC S24). We wor…
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