The best alternatives to Codeship are Buddy, Heroku, and Greenhouse. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Codeship?
Tanka— Tanka = Slack + Glean, built for fast-growing startups.
CI Demon is a macOS application that puts all your CI information directly on your Desktop's status bar. Save time by not having to navigate to slow web apps. Get notifications when a build fails. Trigger re-builds at the click of a button.