Zscaler is competing with a host of other Web security gateway makers, including Symantec, Intel Security (formerly McAfee) and security vendor Websense. All the vendors are moving to cloud-based services and can be deployed as a proxy or bridge mode for some services. Other companies sell a range of appliances for midmarket and enterprise customers who want hands-on reporting and logging and capabilities that extend to hybrid environments. Blue Coat and Cisco Systems are the market-share leaders in the space, according to research firm Gartner.