Serverius is a hosting provider from the Netherlands that also sells DDoS protection as a separate service. There are three variants, for an IP address, for a website and for game servers, so the filtering can be matched to what is actually under attack.
A Dutch operator filtering traffic in Europe is a European alternative to the American protection networks, and traffic does not have to cross the Atlantic to be scrubbed. It suits website owners, game server operators and small hosting companies.
Pricing
Website DDoS protection has a free plan for one website with unlimited traffic, though a 10 euro setup fee applies. The first paid plan costs 15 euro per month and includes a web application firewall.