mycli - A CLI for MySQL with auto-completion and syntax highlighting

Rollbar - Rollbar collects errors that happen in your application, notifies you, and analyzes them so you can debug and fix them. Ruby, Python, PHP, Node.js, JavaScript, and Flash libraries available.

TrackJS - JavaScript Error Tracking for Modern Web Applications

usql - Universal command-line interface for SQL databases

Sequelize - Provides access to a MySQL database by mapping database entries to objects and vice-versa.

Sentry.io - From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.