This article was interesting in many ways.
Just the logistics and mechanics involved in such a large daily feeding boggles the mind.
These langars are a basic features of large Sikh gurudwaras (temples) wherever they are.
I haven't visited the free lunch in the Amritsar Golden Temple, but one of the best lunches on the tourist circuits in Kenya is in the Sikh temple in Makindu (Nairobi-Mombasa road). In Makindu they request a token payment from those who can afford it (not compulsory). They also have a good basic vegetarian lunch and they had a really excellent freshly made sweet lime juice to drink on our visit.
It's of course, always good to have a positive story on food and communal relations coming from South Asia (for a change).
I know there are other temples of other faiths in India (e.g. Hindu temples like the Udipi temple and Annapoorneshwari temple in Karnataka) that offer a free lunch to all devotees.
Are there any other faith based free food traditions elsewhere in the world, or have these been secularized to the soup kitchens / food pantries serving the poor?
I think one good thing about the temple based langars is that it doesn't single out or stigmatize low income people. The person eating next to you could be rich or poor ....