Here is a list of some interesting categories (number of entries in each category is really big):
- Arts
- Automobile Sites
- Blog
- Business Directory
- Career
- Casino
- Church
- Cinema
- Company
- Cooking
- Dating
- Delivery Services
- Education
- Email Services
- Entertainment
- Finances
- Football
- Forum
- Gambling
- Gaming
- Government
- Handicrafts
- Health & Beauty
- Hotel
- Humor
- Internet Directory
- Kids & Parents
- Knowledge
- Library
- Literature
- Magazine
- Media Search
- Media Sharing
- Medical Facility
- Medicine
- Messaging
- Movie
- Museum
- Music
- News
- Online Payments
- Personal
- Pets
- Politics
- Programming
- Radio
- Real Estate
- Relax & Recreation
- Religion
- Restaurant
- Retail
- Search Engine
- Security
- Shopping
- Social Media Tool
- Social Network
- Software Directory
- Sport
- TV
- Telecom
- Torrent
- Tourism
- Transport
- Travel
- Video
- Weather
...and many more.
You can also search by website description, category, content language, contact information, domain registrar, website author/copyright/publisher and even web server. Here is a list of IIS based websites, and here nginx based websites :-)