Final answer:
Scott Chacon co-founded GitHub, a platform for collaborative software development that utilizes Git for version control.
Step-by-step explanation:
Scott Chacon co-founded GitHub, which is a web-based platform for version control and collaboration, allowing developers to work on projects together. GitHub utilizes Git, a distributed version control system created by Linus Torvalds, to track changes in source code during software development. Scott Chacon contributed significantly to the Git community and co-authored the book 'Pro Git' detailing its use for efficient, distributed version control.