CI is one component of our platform. Most other CI tools are pretty agnostic about how tests are structured, though. We also integrate a way to structure your tests into groups so you can control when each test is called. For example, if one test out of 500 fails, it's super easy to rerun that one test with verbose logging and wave dumping enabled. We then also track test pass/fails over time, have tools to leave comments for coworkers on waveforms and logs in the browser like in Google Docs, etc.
Out of curiosity, what do you mean by "Smaller companies get help from larger companies in development and verification"?