Kotlin GitHub Repositories (2026) · Open Source Tools

The Kotlin programming language website

Universe simulator reachable on your Android device.

Sentry SDK for Kotlin Multiplatform

Spring Boot Starter for Logback-access.

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The official Pest Plugin for PhpStorm / IntelliJ IDEA

Swing Music Android Client

A scalable and efficient Runescape server targeting revision #377

Comprehensive Bitcoin development library for Android, implemented on Kotlin. SPV wallet implementation for Bitcoin, Bitcoin Cash, Litecoin and Dash blockchains. Fully compliant with existing standards and BIPs.

Modern PDF Viewer for Android

Protoc integration for Maven. Supports Protoc plugins (such as gRPC), building from descriptors, discovery of sources from the classpath.

This app aims to recreate Apple's dynamic island for Android, but this time, following Google's Material Expressive design.

Pragmatic AI Labs MCP Agent Toolkit - An MCP Server designed to make code with agents more deterministic

A multiplatform modpack manager for Minecraft: Java Edition. Create modpacks for CurseForge, Modrinth or both simultaneously.

Spring Explyt — free, open-source (Apache-2.0) Spring & Spring Boot plugin that brings Ultimate-grade tooling to IntelliJ IDEA Community Edition (works in Ultimate too): runtime-accurate bean navigation, inspections & quick fixes, endpoints, Spring debugger, HTTP client, MCP tools for AI agents.

The VD Infos app reads several of these details and information to show you an example of what can be captured from your device in use.​ A.k.a VDInfos, VDInfo, VD Info.

Spring Boot Starter for Orika.

Backpack Design System

The open source taint analysis engine for the AI era. A formal dataflow analysis tool you can customize and self-host, built so AI agents drive your application security analysis without burning tokens on every scan. AI-ready open source alternative to Semgrep Pro and CodeQL.

Some helper functions and shared resources used by the Fossify apps.