NameSlap.com is described as 'NameSlap helps business, oragnizations, individuals, and even bands find great names that are available for websites. It checks against the whois database using it's own creative generator to come up with a name that is fun, interesting, and available'. There are more than 10 alternatives to NameSlap.com, not only websites but also apps for Android, iPhone, Self-Hosted solutions and Windows. The best alternative is name|grep, which is free. Other great sites and apps similar to NameSlap.com are NameQL (Free), Couple Name Generator (Free), Wordoid (Free) and Namewink (Free).
Wordoid is a web application which helps to solve a common problem faced by almost everyone who needs to have an online presence - finding a catchy domain name that is easy to pronounce and easy to remember.