Finding SaaS Solutions: Tips to Filter Tech Companies Effectively

Hi folks - how would I find any company that offers a SaaS solution? I use the "Find companies" feature, and filter for any industry that can be relevant (software development, technology information & internet, etc.) - but that yields only 2600 midmarket which sounds low. Im guessing part of the issue is many companies are classified in their vertical. Is there any good way to filter out tech companies, regardless of their vertical?