MKVToolNix is available on the Microsoft Store for a small fee. This is a way for you to support the development financially while getting automatic updates in return.
On top of them sits MKVToolNix GUI, an easy-to-use program making the functionality of those command-line tools available as a GUI. The program can be downloaded from its home page.
MKVToolNix is a set of tools to create, alter, split, join and inspect Matroska files (mkv). With these tools one can get information about (mkvinfo) Matroska files, extract tracks/data from (mkvextract) Matroska files and create (mkvmerge) Matroska files