Cygwin and MSYS2

[rashil2000]

Cygwin and its good friend MSYS2 are very popular Unix-like distributions (Git for Windows uses MSYS2). I feel they're worth a mention (considering Cygwin is more than 26 years old at this point).

• Is it under active development, receiving commercial support, or have an active volunteer community?

Yes, both are very actively developed.

• Is the operating system notable or unique in some way?

I think so, because they let you use all UNIX tools and functionalities while being on Windows.

• Does the operating system strive for UNIX philosophy?

I'm not sure how to answer this question, but I have a link here: https://cygwin.com/faq.html#faq.what.what