OwlPlug is a desktop application for managing audio plugins (VST2, VST3, AU, LV2) and analyzing DAW projects (Ableton Live, Reaper, Studio One). It provides a complete plugin management workflow: scan directories to discover plugin files, extract metadata via a native JUCE-based scanner, enable/disable plugins, manage symlinks, and export reports. The Explore feature allows browsing and installing plugins from remote registries (OwlPlug Registry, Open Audio Stack). DAW project parsing extracts plugin references to enable lookups and dependency tracking. Architecturally, OwlPlug is a multi-module Maven project. The core client (owlplug-client) is built with JavaFX and Spring Boot, using H2/JPA for persistence and Ehcache for image caching. The native host module (owlplug-host) uses JUCE to scan plugin binaries via JNI or an embedded command-line scanner. Separate modules provide reusable UI controls (owlplug-controls), ANTLR4-based DAW parsers (owlplug-parsers), and an AtlantaFX dark theme (owlplug-theme). The event-driven design with Spring `ApplicationEventPublisher` decouples UI updates from background tasks. Notable features include differential plugin scanning (only process new/changed files), a task framework with progress reporting and telemetry (Mixpanel), and a set of custom JavaFX controls (Dialog, DoughnutChart, MasonryPane, ChipView, etc.). The codebase demonstrates solid engineering practices: clear separation of concerns, concurrency patterns (Async.Sequence for stale result prevention), and a three-tier image cache. While some UI components are deprecated and the native scanner introduces platform-specific fragility, the overall architecture is well-organized and the reusable control module is a highlight.