What are some alternatives?
When comparing CircleCI and TeamClerk, you can also consider the following products
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Jira - The #1 software development tool used by agile teams. Jira Software is built for every member of your software team to plan, track, and release great software.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
Redmine - Flexible project management web application
Codeship - Codeship is a fast and secure hosted Continuous Delivery platform that scales with your needs.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.