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Showing posts from December, 2025

Show HN: A Prompt-Injection Firewall for AI Agents and RAG Pipelines https://ift.tt/j6FeW3r

Show HN: A web-based lighting controller built because my old became a brick https://ift.tt/H9F5Tfu

Show HN: Fleet / Event manager for Star Citizen MMO https://ift.tt/DjUqGPs

Show HN: Claude Cognitive – Working memory for Claude Code https://ift.tt/qi6KL1k

Show HN: Slide notes visible only to you during screen sharing https://ift.tt/qTBAxdb

Show HN: Replacing my OS process scheduler with an LLM https://ift.tt/NOUHMXE

Show HN: Aroma: Every TCP Proxy Is Detectable with RTT Fingerprinting https://ift.tt/2fdrPIX

Show HN: A solar system simulation in the browser https://ift.tt/erNCUZc

Show HN: Pion SCTP with RACK is 70% faster with 30% less latency https://ift.tt/PVroUgN

Show HN: AI 3D Model Generator https://ift.tt/9yvswAd

Show HN: I'm 15. I built an offline AI Terminal Agent that fixes errors https://ift.tt/ir4cpjt

Show HN: Jsonic – Python JSON serialization that works https://ift.tt/qvFPdbg

Show HN: AgentFuse – A local circuit breaker to prevent $500 OpenAI bills https://ift.tt/ginmqZs

Show HN: Polibench – compare political bias across AI models https://ift.tt/6tpOalv

Show HN: Web CLI – Browser-based terminal with multi-tab support https://ift.tt/mlP8ygL

Show HN: Pivor, Open source self-hosted CRM https://ift.tt/6jKfEG0

Show HN: I created a tool to generate handwritten signatures https://ift.tt/gbYJmWE

Show HN: Elfpeek – A tiny interactive ELF binary inspector in C https://ift.tt/IXnct8Y

Show HN: An open-source anonymizer tool to replace PII in PostgreSQL databases https://ift.tt/RuPX3Q2

Show HN: Full-text search engine for Epstein docs (OCR and OpenSearch) https://ift.tt/sqn78RC

Show HN: Openinary – Self-hosted image processing like Cloudinary https://ift.tt/oH3afXe

Show HN: A kids book that introduces authorization and permissions concepts https://ift.tt/uvyFIBz

Show HN: Meds — High-performance firewall powered by NFQUEUE and Go https://ift.tt/6lqZDcY

Show HN: Real-time SF 911 dispatch feed (open source) https://ift.tt/aXEcYd1

Show HN: Mactop v2.0.0 https://ift.tt/3doI9Rx

Show HN: Pac-Man with Guns https://ift.tt/cjV4B1t

Show HN: I built a 1‑dollar feedback tool as a Sunday side project https://ift.tt/ju5mKgs

Show HN: HN Wrapped 2025 - an LLM reviews your year on HN https://ift.tt/vPbmDVW

Show HN: Music player for big local collections with mpd support https://ift.tt/dbLOfA0

Show HN: MCPShark Viewer (VS Code/Cursor extension)- view MCP traffic in-editor https://ift.tt/pfMwmSj

Show HN: Stickerbox, a kid-safe, AI-powered voice to sticker printer https://ift.tt/tL8CmZv

Show HN: Linggen – A local-first memory layer for your AI (Cursor, Zed, Claude) https://ift.tt/aUu9Kbt

Show HN: TinyPDF – 3KB PDF library (70x smaller than jsPDF) https://ift.tt/4WUZ60a

Show HN: Explore Prometheus /metrics endpoints from your terminal https://ift.tt/QWRkH9Z

Show HN: The feature gap "Chat with PDF" tuts and a regulated enterprise system https://ift.tt/Yo5tm6u

Show HN: Solving the ~95% legislative coverage gap using LLM's https://ift.tt/B3blIGo

Show HN: Zenflow – orchestrate coding agents without "you're right" loops https://ift.tt/yYendRv

Show HN: ModelGuessr: Can you tell which AI you're chatting with? https://ift.tt/oEq2dk3

Show HN: A lightweight SaaS to reduce early-stage app friction https://ift.tt/zQVwl6C

Show HN: A Wordle-style game for SHA-256 hashes https://ift.tt/4DxrVXy

Show HN: 999 Penguins https://ift.tt/xHpd03z

Show HN: Llmwalk – explore the answer-space of open LLMs https://ift.tt/dIrn95g

Show HN: Open-source customizable AI voice dictation built on Pipecat https://ift.tt/TcU3ZW7

Show HN: Tic Tac Flip – A new strategic game based on Tic Tac Toe https://ift.tt/XCtpLar

Show HN: Soup.lua: making Lua do what it shouldn't https://ift.tt/Jav9tgU

Show HN: I built a GitHub application that generates documentation automatically https://ift.tt/Y5mV4fP

Show HN: PhenixCode – Added admin dashboard for multi-server management https://ift.tt/zpskZGr

Show HN: I'm building an open-source Amazon https://ift.tt/xZ8CSiy

Show HN: ESLint Plugin for styled-jsx https://ift.tt/FEQOhHm

Show HN: I used Gemini 3 to turn 42 books into interactive webpages in 2 weeks https://ift.tt/ogAqh7P

Show HN: An endless scrolling word search game https://ift.tt/uOKjJ5F

Show HN: SIM – Apache-2.0 n8n alternative https://ift.tt/EgC8Pua

Show HN: Cargo-rail: graph-aware monorepo tooling for Rust; 11 deps https://ift.tt/CiJdATN

Show HN: I launched a podcast to interview makers https://ift.tt/RAWp6m3

Show HN: A 2-row, 16-key keyboard designed for smartphones https://ift.tt/z8lxceH

Show HN: Gemini 3 imagines Hacker News as a HyperCard stack in 1994 https://ift.tt/62sQUIm

Show HN: Advent of Back Ends https://ift.tt/KhQ2z6A

Show HN: Agentic Reliability Framework – Multi-agent AI self-heals failures https://ift.tt/lS5rYAO

Show HN: Fanfa – Interactive and animated Mermaid diagrams https://ift.tt/9EFqO7U

Show HN: Edge HTTP to S3 https://ift.tt/jWHntIT

Show HN: Diesel-guard – Lint Diesel migrations for unsafe PostgreSQL patterns https://ift.tt/3lATZ1K

Show HN : WealthYogi - Net worth Tracker https://ift.tt/rGuR13Z

Show HN: OpenFret – Guitar inventory, AI practice, and a note-detection RPG https://ift.tt/GEAoXtQ

Show HN: Minimal container-like sandbox built from scratch in C https://ift.tt/Eodq9Ii

Show HN: TapeHead – A CLI tool for stateful random access of file streams https://ift.tt/NaXBQpS

Show HN: Manifesto – An AI-Native UI Framework Intent-to-State, Not Text-to-App https://ift.tt/LVkrdYl

Show HN: AgentPG – Stateful AI Agents in Go with PostgreSQL Persistence https://ift.tt/h7dgTFQ

Show HN: Bible Note Journal – AI transcription and study tools for sermons (iOS) https://ift.tt/cBfJ9WF

Show HN: HCB Mobile – financial app built by 17 y/o, processing $6M/month https://ift.tt/LXRk12A

Show HN: SerpApi MCP Server https://ift.tt/7Mal4P3

Show HN: Playwright for Windows Computer Use https://ift.tt/7zMVslh

Show HN: I Built an UI Library that lets you create beautiful UIs in Minutes https://ift.tt/RLlOdKy

Show HN: Cheap OpenTelemetry lakehouses with Parquet, DuckDB, and Iceberg https://ift.tt/7nwsY6K

Show HN: Fresh – A new terminal editor built in Rust https://ift.tt/ekYBrpH

Show HN: Golang Client Library for Gradium.ai TTS/STT API https://ift.tt/6arUeGJ

Show HN: Meeting Detection – a small Rust engine that detects meetings on macOS https://ift.tt/wakN8Hz

Show HN: SMART report viewer – Simple tool to analyze smartctl outputs https://ift.tt/xXWagOG

Show HN: Valknut – static analysis to tame agent tech debt https://ift.tt/ps2jeZq

Show HN: RFC Hub https://ift.tt/PlwNjFK

Show HN: An AI zettelkasten that extracts ideas from articles, videos, and PDFs https://ift.tt/4DcF2Jp