This is a Scoop bucket, which contains nonportable application.
Scoop is an excellent package manager for Windows. It allows installing, uninstalling and updating apps from the command line. The Scoop repository contains many useful applications and there are many more in the extras bucket. A bucket is a collection of application manifests, while an app manifest is a recipe for installing software.
This bucket contains niche apps created by AStupidBear. To add this bucket to Scoop execute
scoop bucket add bear https://github.com/AStupidBear/scoop-bear
# scoop install cwrsync