Jankara-style karaoke app
A karaoke application built using SingOnKey as a base, intended to work like the karaoke systems in Japanese karaoke boxes (Jankara), so the builder can sing with his wife like they did in Japan.
Projects from HN posts
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1689 projects published
subedit
An AI-native linter and formatter for AI-generated code comments and Markdown. It automatically fixes style misalignments deterministically, and when a problem cannot be fixed by reformatting, it invokes AI via a hook to regenerate the content.
Voice Brain Dump
A web app for voice-based brain dumping — capturing thoughts and ideas by speaking them out, shared via the domain voicebraindump.com.
Paper Profit
A paper-trading platform that teaches investing and trading through hands-on simulated trading practice, letting users learn by doing.
BestOf journal reduction framework
An analog, pen-and-paper framework that reduces daily journals into a curated commonplace book. The process: write a daily journal as usual, underline the most resonant passages with a red pen, let the thoughts settle for a few days, copy the best underlined sections into a separate 'BestOf' journal with a black pen, and then review weekly, striking through anything no longer needed. Over time this effortful reduction produces a single repository of the best ideas from all daily journals.
Launchroom
This is a self-hosting dashboard that provides a Railway-like canvas for connecting the different services in a project, and it uses Tailscale for easy multi-server setups.
Recap360
A macOS-only video player focused on 360-degree videos. It supports GoPro MAX, DJI Osmo 360 and Insta360 cameras, and also plays dash cams and body cams (Vantrue and Boblov). It loads footage of a multi-hour ride in seconds directly from MicroSD as a small ~5MB download with no ads and no accounts, and shows a map overlay plus graphs of internal camera metadata such as speed, altitude, ascent rate and internal temperature.
Real-time animal behavior camera analytics
This system watches animals with cameras and analyzes their behavior in real time.
kavla.dev
A SQL canvas tool providing a visual canvas for working with SQL, with support for pasting images. The builder is exploring layered graph drawing (Sugiyama) layout patterns for arranging nodes on the canvas.
isomorphic-app
A tool similar to Wayfinder for agent memory, built for use by non-technical teams.
KoalaMM
This memo app keeps indented lists flat instead of nesting them into parent-child hierarchies, letting users move lines around freely like in OneNote but with a less clunky interface.
ImperiaQuiz
Online multiplayer quiz game supporting 1-vs-1-vs-1 matches (with bot opponents when few players are online), a remake of the old ConQUIZtador game. Built with a Go backend, a React + Three.js frontend, and a bank of over 20,000 questions generated with LLMs and hand-reviewed.
draw
A live architecture board that developers and their coding agents draw on together. The agent connects over MCP (Claude Code, Cursor, Codex, claude.ai) and draws what it changes as it works, with edges meant to cite a source line or fingerprint. Users can circle something in red crayon to get the agent to answer or fix it. Use cases include an incident scratch pad where the agent lays out its debugging findings, seeing how a change affects the architecture before reading the diff, flagging risky parts like a DB migration with every piece of code that reads that table, diagram branching (creating a branch of an existing diagram instead of cloning it), and a work-in-progress GitHub App that generates a diagram per PR. Open source under Apache-2.0.
looot.ai
Pay-per-use platform that gives AI models access to a catalog of the best tools, with no subscription required.
Luminum
This is a Raspberry Pi OS modification for kids that turns a Raspberry Pi into a dedicated at-home learning device. The core idea is a no-limit device at home dedicated to learning rather than games.
Mother of all VPNs
A VPN project called 'Mother of all VPNs' (MOAV), presented with its homepage at moav.sh.
TheLastSaaS
Open source (MIT) data and backend layer that serves as glue between AI assistants, agents, and data. Provides a flexible data layer plus users, groups, granular permissions, notifications, durable work queues, and audit logs, with MCP and CLI interfaces that work across agents and assistants such as Claude and GPT.
Video Hub App
Video Hub App is a desktop application for browsing, searching, and organizing video collections on Windows, Mac, and Linux, released as MIT-licensed open source. It is currently being ported from Electron to Tauri to shrink the installer from 400 MB to 40 MB.
PaperWX
A dead simple weather site that shows the next 24 hours of weather in plain language, emails the forecast the night before, and also displays NWS warnings and watches. It draws on freely available data from the local National Weather Service, aiming to fix unreadable weather sites.
Ghost-race running watch app
A watch app for runners that lets them compete against their previous runs, inspired by 1990s rally games where players raced against "ghosts".
LEGO deal tracker
A LEGO deal tracker aimed at collectors and LEGO investors that focuses on price prediction based on data.
Component tracker for hardware tinkering
A mobile app for tracking the hundreds of components used when tinkering with physical devices.
MiniHomelabs HWDB
A hardware database that works like a PCPartPicker for used OEM computers, letting home lab enthusiasts compare specs of old PCs. Currently focused on specs, with plans to add viable upgrade paths and explanations of the different model lineups.
Fantasy Recipes
A fantasy-themed recipe site where all the recipes are narrated by different characters. It took inspiration from the Necronomnomnom and is aimed at people who enjoy DnD.
Univerlab
A collection of the author's various projects, all hosted at univerlab.org; the comment provides no further details about the individual projects.
Context Cost
A website presenting a software design theory centered on the concept of context cost, arguing that design decisions should be driven by context cost considerations.
Muster
A Libghostty-powered terminal for managing AI agents. It lets the user keep an eye on their agents and lets agents (cross-harness included) work together, communicate, and spawn new Muster agents themselves. Recently given a visual refresh and used as a daily driver.
Kan
An offline Kanban system stored as files in a Git repository for tracking tasks and projects. AI agents can interact with it through the kan CLI, express which cards block what, and automatically pick up work with 'kan ready'.
LLM screenplay generation strategies
This project develops effective strategies for getting LLMs to generate screenplays that are not terrible; the author reports having found some approaches that seem to work.
vpdf
This app is a vim-inspired terminal PDF reader built on MuPDF and the Kitty Graphics Protocol, letting users read PDFs in the terminal with vim keybindings.