perf - Perf is a simple app monitoring solution paired with meaningful alerts.
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.
Treo - Treo is the page speed monitoring tool that helps your customers from obtaining a faster web experience.
Raygun - Raygun gives developers meaningful insights into problems affecting their applications. Discover issues - Understand the problem - Fix things faster.
Deppbot - Continuous Updates - Based on your configured schedule, deppbot will run bundle update on your Ruby app and send the result as a Pull Request to GitHub.
RabbitMQ - RabbitMQ is an open source message broker software.