You may have just discovered a dozen VMS posts today, but up voting them together causes all of the votes to be deleted.

• C++17 and XSLT: Aptcp
• C++ and I18N: Ask Library (C++)
• Perl, Javascript, XUL: Stevedore - DocWorker
• JavaScript, SVG, DOM, XML and XSLT: Emle - Electronic Mathematics Laboratory Equipment documentation
• VAX FORTRAN: SDSU_AskLib
• VMS, VAXELN, RSX-11M/M+, C, DCL, TCL/Tk, Scala
• OpenHub/cwhii
• Resume

Windows NT looks like MS-Windows with features from VMS but in its heart it is like VAXELN...ZuckOS