EmiWeb is a subscription website for Scandinavian Immigration and Emigration records.
“EmiWeb is the first web based archive of its kind covering migration to and from Scandinavia. It’s a profit organisation within non-profit organisations. The purpose is getting archives online and contribute to non-profit organisations research and development.”
Their database includes over 1 million Swedish emigrants, almost 300,000 Swedish immigrants, over 300,000 Danish emigrants, and many other database groups. They offer a free 2 week subscription or a limited access free subscription.