Jvm GitHub Repositories (2026) · Open Source Tools

An implementation of the OpenTelemetry specification as a Kotlin Multiplatform Library

TestNG testing framework

https://openjdk.org/projects/loom

Coverage-guided, in-process fuzzing for the JVM

Markdown renderer for Kotlin Multiplatform Projects (Android, iOS, Desktop), using Compose.

JNI Bind is a set of advanced syntactic sugar for writing efficient correct JNI Code in C++20 and up (or C++17 with clang).

Lucee is a high-performance, open-source CFML server written in Java. Supporting JDBC, Caching, Parallelism, HTTP, ORM, REST, S3 and dynamic Java integration, Lucee is great for developers aiming to build fast, scalable applications, delivering faster startup, rapid compilation and better runtime performance.

RingoJS is a JavaScript platform built on the JVM and optimized for server-side applications.

Extendable MVI framework for Kotlin Multiplatform with powerful debugging tools (logging and time travel), inspired by Badoo MVICore library

Zircon is an extensible and user-friendly, multiplatform tile engine.

Kotlin Multiplatform library for parsing RSS, Atom, and RDF feeds on Android, iOS, macOS, tvOS, watchOS, JVM, JS, and Wasm.

Play Framework Sample Projects

Port of a popular ruby faker gem written in kotlin. Generate realistically looking fake data such as names, addresses, banking details, and many more, that can be used for testing and data anonymization purposes.

🟢 Charts for Jetpack Compose — Multiplatform (Android · iOS · Web · Desktop)

Lightweight lib for recovering stack trace in exceptions thrown in Kotlin coroutines

🔮 A modern multi-paradigm compiled programming language for the JVM platform. website: https://ixionlang.ru/

Examples and Tutorials of Event Sourcing in JVM languages

Sentry SDK for Kotlin Multiplatform

LingFrame: A JVM Runtime Security Governance Solution for Long-Running Systems. It implements modular isolation and zero-trust permission control to deliver automatic method-level full-link tracing, security auditing, and zero-downtime canary releases.

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