Octopus Deploy - Octopus is a friendly deployment automation tool for .NET developers.
Raygun - Raygun gives developers meaningful insights into problems affecting their applications. Discover issues - Understand the problem - Fix things faster.
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.
Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
RabbitMQ - RabbitMQ is an open source message broker software.