Show HN: We open-sourced our compost monitoring tech

Show HN: I Built a Simple German Gross-to-Net Salary Calculator

Show HN: Convolution Solver and Visualizer

Show HN: AI Landscape Design Generator

Show HN: Cardo ‒ Open Source desktop podcast client

Show HN: Rebuild of Blossom, an open-source social robot

Show HN: Unbug – Rust macros for programmatically invoking breakpoints

Show HN: Retry a command with exponential backoff and jitter (+ Starlark exprs)

Show HN: Self-Host Next.js in Production

Show HN: I made a calendar where every month is also a crossword

Show HN: Postiz – open-source social media scheduling tool

Show HN: Rust library for numerical integration of real-valued functions

Show HN: A People Search Engine with Face Recognition

Show HN: MathGPT – Create math animations for any question

Show HN: Dumbo – Hono inspired framework for PHP

Show HN: Physically accurate black hole simulation using your iPhone camera

Show HN: FastGraphRAG – Better RAG using good old PageRank

Show HN: Fixed.pm: A tool to tell if your agile project is on track

Show HN: Embed an SQLite database in your PostgreSQL table

Show HN: Bike route planner that follows almost only official bike trails

Show HN: I built a(nother) house optimized for LAN parties

Show HN: Zyme – An Evolvable Programming Language

Show HN: Tips.io – A Tailwind playground with AI, page management, and theming

Show HN: AI Infographic Generator

Show HN: JSON Price Table for Top Large Language Models

Show HN: Agentic Evaluators for Agentic Workflows (Starting with RAG)

Show HN: Nova JavaScript Engine

Show HN: Documind – Open-source AI tool to turn documents into structured data

Show HN: Sparkline-Svelte a small line chart for dashboards etc.

Show HN: Open-Source Apple Intelligence Writing Tools for Windows and Linux

Show HN: Pesto, a PST viewer made for archivists

Show HN: Venmo Unofficial API

Show HN: A dynamic C (Hot reloading) module-based Web Framework

Show HN: WASM runtime for sandboxing Python code

Show HN: The App I Built to Help Manage My Diabetes

Show HN: Android Dev Quest – A puzzle game solvable only using developer tools

Show HN: Scooter – Interactive find and replace in the terminal

Show HN: Model2vec – Lightning-fast Static Embeddings for RAG/Semantic Search

Show HN: CSV Table – Proper GUI for View and Edit CSV, JSON

Show HN: Konga Beat – A custom track editor for Donkey Konga 2 and 3

Show HN: Fireproof – local-first database with Git-like encrypted sync

Show HN: WikiGraph – Wikipedia 2.0

Show HN: Browser-based website builder powered by LLMs

Show HN: Get any domain's brand data via API

Show HN: OnAir – create link, receive calls

Show HN: ZQDGR a Script Runner for Golang

Show HN: Windsurf – Agentic IDE

Show HN: Bluetooth USB Peripheral Relay – Bridge Bluetooth Devices to USB

Show HN: Tailwind Box Shadow Generator

Show HN: Burner – A low cost wallet to gift crypto

Show HN: Free mortgage analysis tool to avoid getting screwed by closing costs

Show HN: City Finding Game

Show HN: Terminal3d – View 3D Models in Your Terminal, Built with Rust

Show HN: Libretto – Simple recording and editing, an alternative to Descript

Show HN: A simple image puzzle generator

Show HN: Nosia – Privacy-focused AI to run models on your own data and device

Show HN: Qlty CLI – Meta-linter and auto-formatter for 20 programming languages

Show HN: Spaces Protocol Is Live on Bitcoin Mainnet as of Today

Show HN: Understanding the Bloch Sphere

Show HN: Single File Observable Notebook Bundler

Show HN: Ylem – an open-source orchestrator for real-time data streaming

Show HN: Basemulti – Build Airtable-like interfaces for any database, no-code

Show HN: ContextCheck – Open-source tool for testing LLMs, RAGs and Chatbots

Show HN: Hercules – Open-Source software testing agent

Show HN: deploying a website just to transfer a file

Show HN: archgw: open-source, intelligent proxy for AI agents, built on Envoy

Show HN: Unfeed – A free RSS reader and bookmarking

Show HN: Animus – Interactive Workbooks

Show HN: Novus – local HTTPS proxy for a delightful developer experience

Show HN: I made Picle (a.k.a. Catchphrase x Wordle x AI)

Show HN: I made an application that creates a folder directory annotation tree

Show HN: Hyperion – 10k Player Minecraft PvP Battle Written in Rust

Show HN: Pokemon TCG Pocket

Show HN: Next Beats – A Modern, Customizable, Open Source Lofi Music Player

Show HN: Top Hacker News stories every day over the years

Show HN: MagicQuill – An Intelligent Interactive Image Editing System

Show HN: OnePageGA – Simple dashboard for GA4 like Plausible

Show HN: Tab Sync Pro – Automatically organize browser tabs by domain

Show HN: I built an app for anyone to design their own kitchen

Show HN: Vratix – Open source API Modules that simplify backend development

Show HN: World's Radio – Listen to Radio Stations Worldwide

Show HN Memory for AI Agents

Show HN: Ore – Lightweight, Generic and Simple DI Container for Go

Show HN: BabyGenerator – AI-Powered Baby Face Preview

Show HN: Created SaaS Liquidation marketplace after 40 failed products myself

Show HN: Merge Mosaics – The Ultimate Mosaic Online Puzzle for Free

Show HN: I made a scam detector and build a public database for it

Show HN: I made a demo of my Prolog-successor. Try it please

Show HN: A Tiny-C language compiler, rewritten in Python