Who uses Erlang for product development?. Frequently asked questions about Erlang. Pristupljeno 27. lipnja 2006. #"The largest user of Erlang is (surprise!) Ericsson. Ericsson uses it to #write software used in telecommunications systems. Many (dozens) projects have #used it, a particularly large one is the extremely scalable AXD301 ATM switch." Other commercial users listed as part of the FAQ include: Nortel, Deutsche Flugsicherung (the German national air traffic control organisation), and T-Mobile.