Zui (formerly Brim) is an Electron-based desktop application for network security monitoring and data exploration. It provides a graphical interface to query and visualize data stored in a Zed/SuperDB lake, with a focus on Zeek and Suricata log analysis. The application supports importing packet captures (pcap), structured logs (Zeek TSV, NDJSON, CSV, Parquet), and offers a rich query editor (Monaco), histogram, table/inspector views, and export workflows. The codebase is a monorepo (Yarn workspaces, Nx) with packages for type definitions (`superdb-types`), a Node.js client (`superdb-node-client`), sample data, and an e2e test framework (`app-player`). The architecture follows a domain-driven pattern with handlers and operations, a Redux store with versioned state migrations, and a plugin system for extensibility. While the application is actively maintained and functionally rich, it exhibits some technical drift due to a mix of legacy and modern patterns, a large migration history, and tight coupling between core and plugins.