Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
Datamatics TruBot - TruBot is an enterprise grade, multi-skilled bot programmed to enhance your enterprise’s productivity. It automates a range of simple as well as complex processes.
RunDeck - RunDeck is an open source automation service with a web console, command line tools and a WebAPI.
Automation Anywhere - Automation Anywhere Premier Revolutionizing automation software New Version: Supports Windows 8
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Cyclr - Powerful SaaS integration toolkit for SaaS developers - create, amplify, manage and publish native integrations from within your app.