Shuuka - make it easy, use one nickname for all your networks
Name Combiner - You can use this name combiner to find the unique name using a combination of words that you choose.
Namelix - AI business name generator
Name Ideas Generator - A simplistic domain name generator.
Handlescout - Get notified when a Twitter username becomes available
Couple Name Generator - Couple Name Generator combines two people?s names into the unique supercouple name