| Introduction | |
| Jarg | www.jarg.com |
| Pinpoint | www.pinpoint.com |
| iPrompt | www.iprompt.com |
| Autonomy | www.autonomy.com |
| Brightware | www.brightware.com |
| Ask Jeeves | ask.com |
| Yahoo! | www.yahoo.com |
| HNC Software | www.hnc.com |
| AOL/PLS | www.pls.com |
| Open Text | www.opentext.com |
| SageMaker | www.sagemaker.com |
| AskMe.com | www.askme.com |
| Net Perceptions | www.netperceptions.com |
| Go.com | www.go.com |
| www.google.com | |
| EoExchange | www.eoexchange.com |
| Inktomi | www.inktomi.com |
| Semio | www.semio.com |
| WebTop | www.webtop.com |
| FAST | www.fast.no |
| Albert-Inc | www.albert-inc.com |
| TextWise | www.textwise.com |
| Metacrawlers | |
| Copernic 2000 | www.copernic.com |
| BullsEye | www.intelliseek.com |
| Ixquick | ixquick.com |
| For-Fee Systems | |
| Northern Light | www.nlsearch.com |
| Powerize | www.powerize.com |
| SageMaker | www.sagemaker.com |
| Agent-Enhanced Engines | |
| X-Portal | www.kcsl.ca/X-Portal/ |
| Autonomy/Kenjin | www.kenjin.com |
| KnowAll | www.knowall.com |
| NewsNow | www.newsnow.net |
| Zerx | www.zerx.com |
| My Yahoo! | my.yahoo.com |
| Ask Jeeves | ask.com |