Brandpa - Domain names for startups
Domainz.io - Premium domains, for not so premium prices
sub.dom.ain.studio - Search trillions of subdomains & get your perfect name
Newsy - Monetize your un-used domains and turn them into your own content aggregator with 0 code!
Lean Domain Search - Find a Great Domain Name w/ twitter handle availability
DomainWatch - Domain Monitoring Made Easy