Cool Software Projects

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.

A new tool called Pi pod enables developers to run their Pi coding agent in secure, isolated sandboxes directly on their own servers. The platform uses cloud pods to provide a self-hosted environment for safely executing and managing coding sessions.

A developer has released ldraw-nova, an open-source AI tool that automatically generates custom LEGO models. The project utilizes advanced agent tooling powered by Astra, Jev, and Opus 5.5 to streamline the generative building process. This release provides users with a novel way to design and construct unique virtual LEGO creations.

A new project showcased on Hacker News applies a simulated oil paint canvas to images generated by the Opus 5.5 AI model. The tool processes the initial AI output through an oil paint simulation to add realistic textures and brushstroke effects to the final digital artwork.

Pyxel is an open-source Python game engine designed for developing retro-style games with integrated art and sound editors. The project provides developers with an all-in-one environment to create classic games and is hosted on GitHub for community contributions.

Janus is a new Go-based API router for AI models that utilizes a Vulkan backend to execute GGUF files. It provides a versatile solution for local AI inference by supporting GPUs from AMD, Intel, and Nvidia.

A new open-source model routing tool for coding agents has been introduced, claiming to deliver top-tier performance comparable to leading models like Astra by dynamically routing tasks to faster alternatives like Deepseek. Community discussions highlight its token efficiency and note that it supports enterprise workflows by seamlessly integrating with all underlying LLMs utilized by GitHub Copilot.

Yantra is a newly released LALR(1) parser generator for C++ that streamlines compiler design by combining multiple tools into one. It efficiently handles lexer, parser, and abstract syntax tree generation within a single unified application.

Lathoa is a new math app for children that features an AI robot designed to intentionally make calculation errors. Kids are tasked with catching and correcting these mistakes to practice essential critical thinking skills. The app aims to prepare the next generation for an era where verifying AI outputs is a crucial ability.

A new browser-based application provides a real-time, real-scale visualization of the solar system featuring 526,000 asteroids and all currently tracked satellites. The project utilizes WebGL2 and web workers to render daily updated orbital data from NASA and CelesTrak, allowing users to track celestial bodies and spacecraft using an interactive time slider. Community feedback has prompted the developer to quickly implement improvements for zooming and mobile compatibility.

A new interactive 3D model of the historic Enigma machine allows users to explore its intricate rotor mechanisms and electrical circuits. This educational project provides a hands-on way to understand the inner workings of the famous cryptographic device.

A new open-source project named NSL brings Windows Subsystem for Linux functionality directly to native Linux hosts by allowing users to run lightweight, WSL-style machines within their existing environments. This tool provides developers with isolated testing instances without the performance overhead of traditional virtual machines.

A new project called HN.watch enhances the Hacker News front page by pairing every story with a short video explainer. This tool provides a multimedia alternative for users who prefer to quickly grasp the context of trending tech discussions through visual summaries rather than reading headlines.

A new free browser game called Stickman transforms any website URL into a destructible pixel-art level using its text, images, and layout elements. Players can fight their way through these generated environments either solo or with friends.

Lofi Cities is a free, browser-based platform that generates endless lofi music accompanied by pixel-art nighttime scenes of major global cities. Users can instantly access this ambient audio and visual experience without needing to create an account or download any software.

Reladraw is a new open-source diagramming language that gives users full manual control over element placement. Unlike tools with automated layouts, it allows creators to precisely dictate the exact position of every diagram component. The project is currently available for public contribution on GitHub.