They review licenses, and act as a sort of PR team for the Free Software movement. The whole point is to make Free Software not seem too scary to businesses.
In that context it is important to differentiate Free from Open Source software.
The OSI is specifically built with a different vision from the FSF.
Free software, shall always be free, with almsource and ideally all derived works.
Open Source wants the code to be spread and for that allows inclusion with commercial software. (i.e. Microsoft was able to take open source TCP/IP stacks from BSD (BSD License) and integrate with Windows 95. That wouldn't have worked with a GPL Free Software implementation. (Even LGPL)
The supporting argument there is: By allowing that Microsoft's implementation was fully compatible to the rest of the world instead of having "bugs" (purposely?) in their own implementation, which would limit interoperability.
The free software argument is that they now took the code and closed it, not giving users a freedom to review (verify) and fix themselves. Which allowed Windows to play in TCP world instead of being an outsider.
No. "Free Software" is a term created by RMS/FSF. "Open Source" was later "formalized" by OSI to differentiate.
FSF puts it this way:
> Another group uses the term “open source” to mean something close (but not identical) to “free software.” We prefer the term “free software” because, once you have heard that it refers to freedom rather than price, it calls to mind freedom. The word “open” never refers to freedom.
And yes, the term "open source" predates OSI, but till OSI didn't have any specific definition and was slightly different for everybody. OSI created a mostly accepted definition whoch is distinct from FSF's Free Software definition.
If so, I think they made their point alr? I mean, this list is completly riddled to the brim with companies that use open-source! https://www.apache.org/foundation/sponsors
The OSI is specifically built with a different vision from the FSF.
Free software, shall always be free, with almsource and ideally all derived works.
Open Source wants the code to be spread and for that allows inclusion with commercial software. (i.e. Microsoft was able to take open source TCP/IP stacks from BSD (BSD License) and integrate with Windows 95. That wouldn't have worked with a GPL Free Software implementation. (Even LGPL)
The supporting argument there is: By allowing that Microsoft's implementation was fully compatible to the rest of the world instead of having "bugs" (purposely?) in their own implementation, which would limit interoperability.
The free software argument is that they now took the code and closed it, not giving users a freedom to review (verify) and fix themselves. Which allowed Windows to play in TCP world instead of being an outsider.