Pluralsight, the Utah-based education startup popular with technology professionals, has filed confidentially for an IPO, the company announced on Monday.

Breaking the enterprise Pluralsight started life as an online training platform for software developers to hone and learn new skills like JavaScript or Python.

Pluralsight confirms that its knowledge base to comes from some 1,500+ expert authors feeding into what are over 6,500 learning courses.

Pluralsight has kept the IPO window for software companies wide open as the Utah ed tech company's shares rose 33% in its first day of trading.