Latest News & Blog

21CS is continuing to grow its portfolio, employee base, and revenue.
Follow along with our annoucements.

Recent Posts

Who is 21CS?  

Who is 21CS?  

Today 21st Century Software announces our rebranding as 21CS, reflecting a new chapter for our company. We are pushing forward to the future of innovation and stepping beyond the 21st century.

Research Paper: Infrastructure Innovation

Research Paper: Infrastructure Innovation

In our latest research brief, we analyze the current approach to resilience and the challenges facing enterprises in today’s increasingly dynamic and rapidly changing business climate.

Eddy Ciliendo Joins 21CS

Eddy Ciliendo Joins 21CS

Veteran IT executive Eddy Ciliendo joins 21CS as Vice President of Business Development. In this newly created position, Ciliendo will define and lead 21CS’s corporate strategy, fostering trusted partnerships and new product development for clients in the Z/OS ecosystem and beyond.

21st Century Software is a leader in the development of mainframe software solutions, linking the past to the future in support of the mainframe ecosystem.

About Us




940 West Valley Road
Suite 1604
Wayne, PA 19087-1823


® 2022 21st Century Software.
All Rights Reserved.