SquadJS is a Node.js scripting framework for Squad game servers. It acts as a server-side daemon that connects to a Squad server via RCON and live log files (local, FTP, or SFTP) to collect real-time events such as player connections, kills, wounds, chat messages, admin actions, and server tick rates. The framework provides a plugin system with base classes (BasePlugin, DiscordBasePlugin) that allow extensibility for Discord integration, database logging (via Sequelize with MySQL/SQLite), community ban list checks, and custom admin tools. It also includes a Socket.IO API for remote monitoring and a prebuilt Grafana dashboard for visualization. The architecture is a monorepo with Yarn workspaces (core, squad-server, assets), where core handles RCON communication and log parsing, and squad-server manages server lifecycle, log rules, and plugin loading. The system is designed to be deployed alongside a Squad game server and is actively maintained with a focus on community-driven plugins.
GCViewer is a mature, monolithic Java desktop application (Swing GUI) and CLI tool for parsing, analyzing, and visualizing garbage collection (GC) logs from a wide range of JVM implementations (Sun/Oracle, IBM, HP, BEA/JRockit, Go, and modern OpenJDK unified logging). Its architecture follows a layered pattern: a family of DataReader implementations parse vendor-specific log formats into a unified GCModel of GC events. This model is then consumed by statistical analysis utilities (DoubleData, RegressionLine) and rendered via Swing charts or exported to CSV/PNG/plain text. The codebase demonstrates strong engineering in its utility classes (NumberParser, HttpUrlConnectionHelper, MonitoredBufferedInputStream) and test infrastructure (extensive real-world log fixtures). However, it suffers from significant technical drift, primarily a Java 8 baseline, alongside accumulated technical debt such as e.printStackTrace() usage, ignored tests, known export bugs, and fragile parser logic. It is actively maintained but carries the weight of supporting two decades of JVM GC log formats.