Yes, both GitLab and Katalon Studio offer a Free Trial.
GitLab is designed for Large Enterprises, Medium Business and Small Business.
Katalon Studio is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of GitLab begins at $19/User/Month, while pricing details for Katalon Studio are unavailable.
Some top alternatives to GitLab includes Codeship, Semaphore, CircleCI, Bamboo, AutoRABIT CI, Buildkite, CloudBees Core, Travis CI and Bitbucket.
Some top alternatives to Katalon Studio includes Postman, Endtest, TestRobotic, Cypress.io, Testim, QARA Enterprise, Tricentis Tosca, TestProject, ZAPTEST and Automaton.