Cool Software Projects

A new Hacker News project called StarSkirmish enables large language models to write their own code and autonomously play the complex strategy game StarCraft. The submission highlights a demonstration using the Gemini 4 Argon model, showcasing the evolving ability of AI to navigate dynamic, real-time problem-solving environments.

Wonderhop is a new free daily game that challenges players to guess the most or least popular answers to various prompts. Players have 30 seconds per question across four daily rounds to either climb with the majority consensus or dive with the minority choice.

The makers of CoScreen have released Petal, a free and open-source alternative to CoScreen and ScreenHero. The new tool provides high-resolution screensharing and remote control capabilities with low latency for seamless collaboration.

Flipflop is a new open-source tool that utilizes Iroh-powered persistent tunnels to enable robust, decentralized file sharing in physical environments. Designed for the meatspace era, the project allows users to transfer files directly without relying on centralized cloud servers and is currently available for contribution on GitHub.

A new developer tool called Ito enables programmers to build and test terminal user interfaces using the Lua programming language. It simplifies the process of creating interactive text-based applications for the command line.

A new platform called Indigene helps users discover native plant species suited to their exact geographic location. The tool identifies flora that will thrive in a specific spot and ranks them based on their ecological benefits to the local environment.

Guitoro is a free web app that allows users to play a virtual guitar using their keyboard or touchscreen. It supports multiple instrument types and features practice tools that let users slow down songs while visually tracking every chord and strum.

Pulse Local is a new Mac budgeting app that runs its AI models locally to maximize user privacy and maintain strict accuracy over financial calculations. While it currently relies on manual CSV imports for non-US users and Plaid for the US, the developer plans to add more automated API integrations following community feedback. Users appreciate the local-first approach but suggest expanding third-party connections to make multi-bank data syncing less cumbersome.

A new Show HN project tests human randomness by having users speak numbers out loud. A browser-based predictor guesses the sequence in real-time, using a split-flap display to show how far ahead of pure chance the algorithm performs.

Hacker News readers are discussing XY Music Notation, a new alternative sheet music system that uses colors and numbers to represent absolute pitches. While the creator aims to simplify reading, many musicians criticize the design as distracting and math-heavy, arguing it ignores the historical compromises that shaped traditional notation. Commenters suggest that relationship-based alternatives, such as isomorphic staves or interval-based systems, would be much more practical for sight-reading.

Spotatui is a fast, standalone music player written in Rust that features both a terminal and graphical interface. It allows users to stream Spotify natively without encountering standard web API rate limits. Additionally, the application supports a variety of other audio sources, including local files, Subsonic, radio, Qobuz, and YouTube.

A new open-source project called Parsimony has been introduced to benchmark the amount of extra code AI models generate. The tool measures AI verbosity to help developers evaluate the code efficiency of various AI programming assistants. By tracking these unnecessary additions, Parsimony aims to encourage more concise and effective AI-generated code.

A new open-source digital audio workstation named Blokkily has launched on Hacker News as an experimental, pattern-first music production tool. The project notably features integration with the Model Context Protocol and is actively seeking community contributions via GitHub.

Brickbrag is a free, browser-based multiplayer game that allows users to explore and build in a shared, real-time brick-built world. Accessible on both mobile and desktop devices, the platform features pre-built environments like towns and race tracks alongside personal plots where players can create their own structures.

BetterWispr is a free, open-source dictation tool for Mac that allows users to seamlessly convert speech into clean text across any application using a simple shortcut. The app leverages local speech models to provide app-specific formatting styles and meeting insights without requiring an account.

A developer has released a recurrent neural network designed to generate Korean handwriting strokes in celebration of Hangul Day 2026. The project adapts Alex Graves' architecture and features a newly published dataset compiled from 4,500 lines of smartpen handwriting.

Diffle is a new keyboard-first diff viewer designed to help developers navigate code changes efficiently without relying on a mouse. The tool features Language Server Protocol support for enhanced code intelligence and includes direct GitHub integration for seamless version control workflows.

A new Hacker News project called Carrier-Explode decodes and compares hidden carrier settings across iPhone, Pixel, and Galaxy firmware. The tool breaks down configurations for APNs, VoLTE, 5G, and Wi-Fi Calling to reveal exactly what each carrier and software build changes.

A new FUSE virtual filesystem allows Linux users to mount Proton Drive directly to their local file system. This tool provides seamless access to encrypted cloud storage through standard file managers without the need for a dedicated desktop application.

A new online archive provides free access to a curated collection of 45 rare tech documents and books, featuring iconic texts like Steve Jobs' Top 100 email and Netflix's culture deck. This project offers tech professionals and enthusiasts a unique opportunity to read the foundational memos and forgotten writings that helped shape the modern technology industry.

A new MIT-licensed command-line tool enables AI agents like Claude Code and Codex to draw temporary visual overlays, such as arrows and text, directly onto a Mac screen. The application features click-through functionality to prevent interrupting user workflows and automatically dismisses the annotations after a brief period.

SVG Spark is a newly launched suite of ten free, client-side utilities for developers and creators working with SVGs. Running entirely within the web browser, the toolkit includes essential features such as converters, formatters, PDF tools, and a regex debugger to streamline design and development workflows.

A maker on Hacker News shared a DIY project detailing the creation of a flexible neon t-shirt using LED filaments. The creator repurposed flexible lighting components from their personal parts bin to integrate customizable illumination directly into everyday wearable clothing.

Edi Life OS is a new self-hosted dashboard designed to help users track personal habits, goals, finances, and tasks. The open-source project features a built-in MCP server, allowing users to seamlessly integrate their personal productivity data with AI assistants.

Jevman is a new project that features six AI decision models playing Pac-Man in real time against classic arcade ghosts. Users can watch the algorithms navigate the maze, check a leaderboard to see which model performs best, or play against the AI themselves.

A new free web tool allows users to transform any smartphone, tablet, or TV screen into a large digital sign simply by visiting its URL. Users can type a message to display custom text, timers, or Wi-Fi passwords in a full-screen format. The service requires no app downloads or account creation.

A new open-source project called Photoc has been introduced on Hacker News, providing a suite of command-line tools tailored specifically for photographers. The GitHub repository is currently open for community contributions to help expand its feature set and improve photo management workflows.

A new Show HN project features a 30-minute pendulum clock built from trash, but the accompanying community discussion largely pivoted to the upcoming 2035 abolition of the leap second. Developers debated the technical challenges of synchronizing civil and atomic time in distributed systems and proposed alternative solutions for handling astronomical time discrepancies.

A new macOS tool called SCM enables deep AI-powered searches across every photo and video frame within any local folder. The application allows users to perform advanced visual queries directly on their devices without relying on cloud-based services.

Thoreau BASIC 3.2 is a free 64-bit interpreter that modernizes classic GW-BASIC syntax for Windows and bootable UEFI environments with a native x64 JIT compiler and multicore processing. The software aims to revive the nostalgic programming language by adding contemporary features like 24-bit graphics, networking, and extensive multimedia playback capabilities.