sql.js

SQLite compiled to JavaScript via Emscripten, enabling full SQL database operations in browsers and Node.js. Version 1.12.6 uses WebAssembly by default (falls back to asm.js), with a release cadence of several updates per year. Unlike native bindings (e.g., sqlite3), it does not require compilation and works purely in-memory, supporting import/export of SQLite database files as Uint8Array. Key differentiators: browser-native execution, no native dependencies, support for prepared statements, user-defined functions, and extension loading. Active development with ongoing maintenance.