San Jose, CA


Overall Rank: 18
Category: Cybersecurity
Category Rank: 3


  • Top Software Company of 2022
  • Power 500 Software Company


Launched 15 years ago, Zscaler is a cloud security company that offers a platform for businesses to securely transform their networks and applications for a mobile and cloud first world. The San Jose, California-based company, which was founded by Jay Chaudhry and Kailash Kailash, is well known in the industry for its innovative tech and currently has more than 275 issued and pending patents. All of its services are 100% cloud-delivered, and the company’s flagship services—Zscaler Internet Access and Zscaler Private Access—create fast, secure connections between users and applications, regardless of device, location, or network.

Used in more than 185 countries, the company operates the world’s largest cloud security platform, protecting thousands of enterprises and government agencies from cyberattacks and data loss. In March 2018, the company raised $192 million after it began trading on the Nasdaq. The following year, Zscaler received the Stevie award as the Most Innovative Tech Company of the Year.

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