Good First Issues in Java
Explore curated starter issues in high-scoring Java repositories. Every listed issue belongs to a welcoming repository scored by C-Rank™ on PR merge rates, review responsiveness, and first-timer acceptance.
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Live Good First Issues (0)
Top Java Repositories with Beginner Issues (20)
Updated Daily via GitHub GraphQL
Virtual Cell Framework
Sends level up, clue, etc. notifications to a Discord webhook or a custom web server
TripleA is a turn based strategy game and board game engine, similar to Axis & Allies or Risk.
Multi-Agent Transport Simulation
Enterprise-grade, commercial-friendly agentic workflow platform for building next-generation SuperAgents.
Open source IaC Automation and Collaboration Software.
Wynntils (Artemis) is a rewrite of Wynntils in 1.21.11 using Architectury, to support Fabric and Forge.
EOLANG, an Experimental Pure Object-Oriented Programming Language Based on 𝜑-Calculus
Agent-ready RPA suite with out-of-the-box automation tools. Built for individuals and enterprises.
Free and Open Source, Distributed, RESTful Search Engine
Hiero Mirror Node archives data from consensus nodes and serves it via an API
Keycloak Benchmark
MegaMek is a networked Java clone of BattleTech, a turn-based sci-fi boardgame for 2+ players. Fight using giant robots, tanks, and/or infantry on a hex-based map.
Process Orchestration Framework
Digital logic design tool and simulator
Plinth is an AI-native engineering toolkit for modern Java enterprise SDLC, built around reusable Commands, Agents, Skills, and MCP Servers.
A cluster computing framework for processing large-scale geospatial data
Config-driven engine that turns JSON into production-grade AI agents. Multi-agent orchestration, 12+ LLM providers, MCP/A2A protocols, RAG, persistent memory, and enterprise compliance (EU AI Act, GDPR, HIPAA). Built on Quarkus.
Light, fluffy, and always free - The AWS Local Emulator alternative
Eclipse GlassFish
How to make your first Java open-source pull request
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