Yes, both CircleCI and Sauce Labs offer a Free Trial.
CircleCI is designed for Large Enterprises, Medium Business and Small Business.
Sauce Labs is designed for Large Enterprises, Medium Business and Small Business.
The starting price of CircleCI begins at $39/Month, while pricing details for Sauce Labs are unavailable.
Some top alternatives to CircleCI includes Codeship, Semaphore, GitLab, Bamboo, AutoRABIT CI, Buildkite, CloudBees Core, Travis CI, AppVeyor and Bitbucket.
Some top alternatives to Sauce Labs includes Provar, BrowserStack, Screenster, LambdaTest, Endtest, CloudQA, Perfecto, Firelab, BugBug and AWS Device Farm.