Re:PowerShell is open sourced and is available on Linux
by MichaelMoser123 on Thursday August 18, 2016 @08:17PM
(#12317186)
Netscape did that with XPCOM [1] they once thought that this is a good idea - i guess for versioning of interfaces; nowadays firefox has moved on from this.
[1] https://en.wikipedia.org/wiki/XPCOM