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.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
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.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Logify - It is a real-time application monitoring and automated exception reporting.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.