Pretty much every industry needs developers. Grocery chains, banks, insurance companies, travel companies, airlines, defense, government, and so on. The pay is average and the work boring, but it’s plentiful.
The pay may be average, but the work doesn't have to be boring. Many of the big players in those industries do quite a bit of in house R&D, much of it every bit is interesting as what is happening at your average 'cool' software companies.
A clearing house for open positions in said industries would be fantastic.
How to gather, collate, and publish ?
Other than defense and government, most of these industries rely on Tata, Infosys, and their brethren for dev resources, which are mostly not US citizens. The in-house employees working in software are mostly project managers.
>> What industries are we talking about?
Retail discount stores. There's a desperate need for guys to stuff the shelves at Carrefour and Target.