Looking for Job Posting Volume Insights

Does anyone know of a website or intelligence tool that allows you to search for companies based on the number of job postings they have, either on LinkedIn or indexed by Google?

To clarify, while I can search for job openings at a specific company on LinkedIn, I’m looking for a way to compare different companies. Specifically, I want to see Company X with 20 job postings, Company Y with 35 postings, and so on. Any recommendations would be greatly appreciated!