GitLab offers Free Trial, but DeepSource does not.
GitLab is designed for Large Enterprises, Medium Business and Small Business.
DeepSource is designed for Individuals, Large Enterprises, Medium Business and Small Business.
Pricing for GitLab Starts at $19/User/Month whereas for DeepSource Starts at $12/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 DeepSource includes Snyk, CodeScan, codebeat, Codacy, DeepScan, Code Climate Quality, SoftaCheck, Codeac, VCodeSpy and Code Inspector.