21st Century Software

21st Century Software is a global leader in the development of mainframe software solutions, linking the past to the future in support of the mainframe ecosystem. Founded in 1992, 21st Century Software has evolved to become a key contributor in the z/OS mainframe ecosystem and has been committed to providing its customers with solutions that deliver value to the mainframe, while enabling them to benefit from world-class customer support. We are an IBM business partner that helps customers optimize the value of products for their core zSystems platform. IBM zSystems offers the most secure platform with excellent scalability, resiliency, and availability. Our recent announcement of VSEn, based on the source code licensing agreement for z/VSE, further solidifies the partnership, offering fresh proof of the ongoing investment in, and commitment to, the platform.
In addition to supporting IBM, our direct licensed products feature foundational DASD and Tape migration solutions and are designed to help organizations reduce staff hours spent on manual migration tasks, reduce migration errors, and gain productivity and efficiency.
- Essential Mainframe Migration for z (EMMz): enables non disruptive local or global data migration for both z/OS and z/VM storage attached to IBM z/OS mainframes across multivendor environments.
- Total Tape: helps reduce the cost of managing tape resources while also providing continuous availability to the mainframe tape data.
- VSEn V6.3: operating system and middleware stack designed to offer non-disruptive compatibility with previous versions of IBM z/VSE up to and including 6.2