| AltaVista |
| http://www.altavista.digital.com/ |
| InfoSeek Guide |
| http://guide-p.infoseek.com |
| Internet Sleuth |
| http://www.intbc.com/sleuth/ |
| Lycos |
| http://lycos.cs.cmu.edu |
| MetaCrawler |
| http://metacrawler.cs.washington.edu:8080/index.html |
| Search Magellan |
| http://www.mckinley.com/ |
| WebCrawler |
| http://webcrawler.com/ |
| World Wide Web Worm |
| http://www.cs.colorado.edu/home/mcbryan/WWWW.html |