Created with passion
Open-source Kotlin libraries and developer tools for the JVM
fragments4k
A framework-agnostic Markdown-based content engine for Kotlin — drop in .md files, get routing, RSS, sitemaps, full-text search, and pagination out of the box.
AI Usage Tracker
A Windows dashboard and tray utility to monitor AI API usage, costs, and quotas across Anthropic, GitHub Copilot, OpenRouter, DeepSeek, Mistral, and more — all from one compact window.
Outerstellar Framework
Headless, framework-agnostic Kotlin utilities for modern JVM development — hot-reloading i18n, JSON-based theming, a plugin engine, and build-time translation validation.
Outerstellar Platform
A full-stack Kotlin platform template — multi-module architecture with observability, security, type-safe configuration, a JTE web layer, and a Swing desktop client.
Runary
A self-hosted personal book, audiobook, and comic manager with built-in readers, rich metadata support, device sync, and a 1900+ integration test suite.
Maven Cleaner
Safely clean your local Maven repository and Gradle caches — scans for old versions, verifies against Maven Central, protects local-only builds, and reclaims disk space.
Needlecast
A Swing-based desktop project launcher for developers — organizes projects into color-coded groups, embeds a terminal, editor, and file explorer, and auto-detects build tools and AI CLI tools.
sparkle4j
An in-app update library for Java and Kotlin desktop applications — background update checking, Ed25519 signature verification, native Swing update dialog, and cross-platform silent installation.