CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
IKAN ALM - IKAN ALM enables development teams to set up customizable software lifecycles, automate build and deploy processes and manage approvals.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
TechExcel DevSuite - DevSuite is a fully integrated ALM solution that has its roots in development and QA management but has expanded to monitor and control all processes of ALM including definition, design, development, testing, and deployment.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Flosum - Flosum, get back to coding with the only automated Salesforce Continuous Delivery Software that is compliant + native to Salesforce.