Wikipedia
Endevor
Endevor is a source code management and release management tool for mainframe computers running z/OS . It is part of a family of administration tools by CA Technologies (formerly Computer Associates), which is used to maintain software applications and track their versions.
The word ENDEVOR is an acronym which originally stood for Environment for Developers and Operations but is now the formal product name for CA's flagship mainframe Application Lifecycle Management source control product. It also competes against another CA source code management tool, Panvalet.