CloudFlareCloudflare co-founders Michelle Zatlyn and Matthew PrinceIT Central Station compiled a list of the top 13 companies that provide security software as a service via the cloud.These ratings are based on reviews by information technology professionals.Visit Business Insider's homepage for more stories.Companies are increasingly looking to build out their cybersecurity arsenal.With the threat of hackers, malware, and other cyber-threats looming, security software has become a must-have - not only for tech companies, but also for companies in retail, media, health, and more. And cybersecurity companies themselves have increasingly turned to delivering their software through the cloud.Cybersecurity companies are becoming some of the hottest places to work and for VCs to throw their money at. However, some experts also say there's also an overflow of security products: VMware CEO Pat Gelsinger recently advised companies to start getting rid of products because the growing number of options out there is introducing more complexity and more problems. To narrow down the best cloud-based cybersecurity products, we turned to IT Central Station - a review site where real IT professionals can leave reviews for the software they use. Among the companies below, valuation numbers for private companies come from PitchBook, a database that tracks such things. And in case you're wondering, IT Central Station also reviewed the top 18 DevOps companies in the industry.So which SaaS security companies are the best, according to users? Here's a list of the top 13 cloud security companies, based on user reviews from IT Central Station.