Yes, both GitLab and Jitbit Helpdesk offer a Free Trial.
GitLab is designed for Large Enterprises, Medium Business and Small Business.
Jitbit Helpdesk is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for GitLab Starts at $19/User/Month whereas for Jitbit Helpdesk Starts at $24.92/Month when Billed Yearly.
Some top alternatives to GitLab includes Codeship, Semaphore, CircleCI, Bamboo, AutoRABIT CI, Buildkite, CloudBees Core, Travis CI and Bitbucket.
Some top alternatives to Jitbit Helpdesk includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Apptivo, Teamwork Desk, HelpDesk, SysAid, ReadyDesk, AzureDesk, Help Desk Premier, BoldDesk and Scopedesk.