Complex sentence: OOPSLA helped object-oriented programming develop into mainstream programming and has helped to incubate a number of now-mainstream disciplines, including design patterns, refactoring, aspect-oriented programming, the Unified Modeling Language, and agile software development.
Split into simpler sentences: OOPSLA helped object-oriented programming develop into mainstream programming. Along the way, OOPSLA has helped to incubate a number of now-mainstream disciplines, include design patterns, refactoring, aspect-oriented programming, the Unified Modeling Language, and agile software development.