RelWave - The Local-First Database Client

Database developers working with PostgreSQL, MySQL, MariaDB, and SQLite can manage their entire workflow through RelWave, a desktop application that combines visual schema exploration, Git-powered version control, and migration management in a single interface. The tool positions itself as purpose-built for modern database workflows, emphasizing local-first architecture and native performance. RelWave's core functionality centers on four phases: connecting to databases, exploring schemas visually, modifying structures safely, and versioning changes through Git. Users can auto-discover local databases from Docker containers and environment variables, or connect to remote instances via built-in SSH tunneling without exposing ports. The application stores all database credentials encrypted in the operating system's native secure keychain, ensuring credentials never leave the local machine. Visual ER diagrams form a central feature, allowing developers to explore schema relationships through interactive, auto-generated diagrams that support zooming, panning, and navigation across hundreds of tables. The migration workflow lets users design schema changes through the UI, preview the exact SQL statements that will execute, and roll back if needed—eliminating the risk of malformed alter table commands. Git integration treats database schemas as code, enabling developers to stage, commit, and push schema changes alongside application code. The SQL workspace includes a multi-tab query editor with intelligent autocomplete based on active schemas, query history tracking, and the ability to save frequently used queries. The architecture combines a React frontend with a Node.js sidecar that provides direct database driver access and operating system-level credential management. This design delivers native driver performance while maintaining the flexibility of web technologies, distinguishing it from pure web-based tools that may sacrifice speed or feature completeness. Supporting features include AI assistance for writing complex queries with schema-aware context, real-time database monitoring that tracks active connections and slow queries, built-in charts and visualization for query results, and schema exploration tools with search, filtering, and cross-referencing capabilities. RelWave runs on Windows and Linux, functioning fully offline once installed.