CheckUsernames
Username Search for the most popular Social Media and Social Networking sites. Check for your brand, trademark, product or user name on 160 Social Networks.
Search domains
MixedName
See the names in common between two languages. Supports 57 different languages, and features such as dictionary matching, fuzzy matching, and reverse searching.
NBdomain
NBdomain - Decentrlized Domain, GlobalID and DataStore
Spyse
Whoisology
A searchable cross referenced database of current and historic domain name ownership records. Designed for InfoSec, legal, and research professionals. Free for casual users.