I think they mean 'open' as in nobody is dining at that table and it's available, not a reference to software development processes.

Indeed. Just highlighting the correlation between possibly-nefarious software and non-libre software.

> "Open as in beer," if I may.

What does this mean?

I understood it this way:

OpenTable sounds like it would be open-source, but it appears that it isn't

I think the parent comment to yours made a sarcastic take using a variation of the popular ambiguity Free as in Beer [1] that usually differentiates between free as 0 cost and free as freedom as a reaction to the OpenTable software being free to use rather than open-source

[1] https://en.wikipedia.org/wiki/Gratis_versus_libre

Heh

Free as in beer

Well, do you want to drink an open can of beer?

You go into a bar, you order the IPA you liked someplace else, you see they've got a heap of cans... the bartender reaches under the bar and hands you... an open can.

No right? You don't want that one. Why the hell is it open?