Yes, both Knapsack Pro and Travis CI offer a Free Trial.
Knapsack Pro is designed for Large Enterprises, Medium Business and Small Business.
Travis CI is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Knapsack Pro Starts at $10/user/month whereas for Travis CI Starts at $69/Month.
Some top alternatives to Knapsack Pro includes Semaphore, GitLab, CircleCI, Buildkite, Travis CI, Bitrise, LambdaTest, CloudQA, Asserted and Thundra Foresight.
Some top alternatives to Travis CI includes Codeship, Semaphore, GitLab, CircleCI, Bamboo, Buildkite, CloudBees Core, AppVeyor and GitlabRunner.