The alphanumeric code "v6.13.10517" tells a specific story. By mid-2021, CCleaner had fully transitioned to version 6.x, which introduced a modernized user interface and better integration with Windows 11's preview builds.
CCleaner Professional Plus is a popular system optimization and maintenance tool developed by Piriform. The software is designed to clean and optimize Windows PCs, removing unnecessary files, registry entries, and other data that can slow down system performance. ccleaner professional plus v61310517 multilin 2021